雷達(dá)及ARPA的使用

1、第二節(jié) 雷達(dá)及ARPA的使用 1156. _A_ is not a job of the radar antenna 下列哪一項(xiàng)不是雷達(dá)天線(xiàn)的功用（）ATo receive the high-frequency pulses from the transmitter 接收發(fā)射器發(fā)來(lái)的高頻脈沖BTo focus the pulses into a beam，and send them into space 把脈沖集中成束，并發(fā)射出去CTo pick up reflected pulses coming from objects that have been struck by the beam

2、接收從物標(biāo)反射回來(lái)的脈沖波束DTo reflect microwaves 反射微波1157. _D_ is not used in modern radar 下列哪一項(xiàng)不用于現(xiàn)代雷達(dá)AEBL 電子方位線(xiàn)BVRM 活動(dòng)距標(biāo)圈CCRT 熒光屏DGrease pencil 蠟筆1158. _D_ typically extends from close as 0.1 nautical miles out to 32 NM （）可最近可達(dá)0.1海里,最遠(yuǎn)可達(dá)32海里AEBL 電子方位線(xiàn)BVRM 活動(dòng)距標(biāo)圈CCRT 熒光屏 Dtarget tracking range 物標(biāo)跟蹤范圍1159. Altho

3、ugh manual plotting for CPA works well，the workload can become overwhelming when confronted with _D_ 雖然使用人工標(biāo)繪也可以準(zhǔn)確求出最近會(huì)遇距離，但是，當(dāng)遇到（）時(shí)，工作量將變得非常大。Aone target Btwo targets Cthree targets Da large number of targets 大量的物標(biāo)時(shí)1160. I _C_ shorebased radar assistance 我（）岸基雷達(dá)幫助AAsk 問(wèn)BLook for 尋找CRequire 需要DIn ne

4、ed of 缺少1162. My radar is not workingI require shore based radar assistanceIs shore based radar assistance _B_? 834我船雷達(dá)故障，我需要岸基雷達(dá)幫助，是否有岸基雷達(dá)（）Aused 已使用的Bavailable 可以使用Cin use 正在用Dcan be used 能被使用1163. PPI is _A_ PPI是指什么Aa plan-position indicator system 平面位置顯示器Bpulse-plan integration Cpulse-pulse inpu

5、t Dpower-plan input 1164. Radar makes it possible and much safer for us to sail _A_ 在（）情況下，雷達(dá)使我們的航行更加安全AIn dense fog 濃霧中BIn boisterous weather 惡劣天氣CIn the open sea 在大海上DIn rivers 在河道中1165. Radar reflectors are required for _D_923下列什么船需要安裝雷達(dá)反射器Aall fishing vessels over 39 feet in length 所有長(zhǎng)度大于39英尺的漁船

6、Bsail-propelled fishing vessels 機(jī)帆并用的漁船Call fishing vessels of less than 200 GT 所有小于200總噸的漁船Dwooden hull fishing vessels with a poor radar echo 雷達(dá)回波反射性差的木質(zhì)漁船1166. SWEEP INT（掃描線(xiàn)亮度）on radar panel is the abbreviation of _D_ 雷達(dá)面板上，“SWEEP INT”是下列哪一個(gè)詞組的縮寫(xiě)（）Asweep introduction 引入、介紹Bsweep interest 興趣Csweep

7、 intention 意圖Dsweep intensity 強(qiáng)度、亮度1167. The _A_ has a built-in world map; most areas are displayed on a scale of 4000 nm from the top to the bottom of the screen，and can be zoomed in to 150 nm 下列哪一種設(shè)備有內(nèi)置的世界地圖，在屏幕上，從上到下最大可顯示范圍是4000海里，也可放大到顯示范圍為150海里Achartplotter BC-MAP NT一種海圖類(lèi)型CC-Cards DPPI A Chartp

8、lotter is a device used in marine navigation that integrates GPS data with an electronic navigational chart (ENC). The chartplotter displays the ENC along with the position, heading and speed of the ship, and may display additional information from radar, automatic information systems (AIS) or other

9、 sensors. As appropriate to particular marine applications, chartplotters may also display data from other sensors, such as echolocators/sonar.1168. The 10-cm radar as compared to a 3-cm radar of similar specifications will _C_955如果其他各種參數(shù)都一樣，與3厘米波雷達(dá)相比，10厘米波雷達(dá)有什么特點(diǎn)（）ABe more suitable for river and ha

10、rbor navigation 更適合在河道及港內(nèi)使用BProvide better range performance on low lying targets during good weather and calm seas 在天氣好，海面平靜的情況下，對(duì)遠(yuǎn)距離的低平物標(biāo)更容易發(fā)現(xiàn)CHave a wider horizontal beam width 波束寬度更寬DHave more sea return during rough sea conditions 在天氣惡劣情況下，有更多的海浪回波1169. The articulated light is superior to othe

11、r types of buoys because _D_ 發(fā)光清晰的燈標(biāo)優(yōu)于其他種類(lèi)的浮標(biāo)，這是因?yàn)椋ǎ〢The radar reflectors reflect better signals 雷達(dá)反射器的回波更好BFog horn signals travel farther to sea 霧號(hào)在海上傳播的距離更遠(yuǎn)CIt is equipped with strobe lights這種燈標(biāo)配有閃光燈DIt has a reduced watch circle這種燈標(biāo)的觀測(cè)周期較小1170. The closest point of approach（CPA）of a contact on a

12、 relative motion radar may be determined _C_999相對(duì)運(yùn)動(dòng)顯示模式下，在什么情況下，可以判斷出CPA（）AImmediately when the contact is noted on radar 在雷達(dá)上一看到物標(biāo)回波，立即可以BOnly if the radar scope is watched constantly 只有一直觀察雷達(dá)才可以CAfter the contact has been marked at least twice 至少回波出現(xiàn)兩次以后才可以DBy an occasional glance at the radar 偶爾看

13、一眼雷達(dá)就可以1171. The correct method of switching off a marine radar is to turn power switch to _ position first，then to _B_ position1008關(guān)閉航海雷達(dá)的正確方法是，先把電源開(kāi)關(guān)旋鈕旋到（）再旋到（）AOff/standby BStandby/off CStandby/close DClose/standby 1172. The development of _B_ led to the fully automatic ARPA systems installed on

14、commercial ships 由于（）技術(shù)的發(fā)展，最終使商船可以安裝全自動(dòng)的“ARPA自動(dòng)標(biāo)繪雷達(dá)”系統(tǒng)ASeaTalk Bpowerful microprocessors and mega memory capacity 功能強(qiáng)大的微機(jī)處理器及容量巨大的存儲(chǔ)器Cchartplotter 海圖標(biāo)繪器Dsmall-scale chart 小比例海圖1173. The radar control that reduces weak echoes out to a limited distance from the ship is the _A_1158減少一定距離內(nèi)的微小回波顯示的控鈕是（）A

15、sensitivity time control（sea-clutter control） 海浪干擾抑制Breceiver gain control 增益Cbrilliance control 亮度Dfast time constant（differentiator）微分調(diào)節(jié)1174. The radar control used to reduce sea return at close ranges is the _B_1160減少近距離內(nèi)的海浪回波顯示的控鈕是（）AGain control 增益BSensitivity time control海浪干擾抑制CFast time const

16、ant微分調(diào)節(jié)DPulse length control 脈沖寬度1175. The radio waves used for radar are very short，only _A_ long 雷達(dá)使用的無(wú)線(xiàn)電波很短，只有（）長(zhǎng)AA few centimeters 幾厘米BA few fathoms 幾拓CA few meters 幾米DA few feet 幾英尺1176. The shoreline along Rocky Point should give a good radar return because _A_ 沿“Rocky Point”的海岸線(xiàn)的雷達(dá)回波很清晰，這是因?yàn)椋?/p>

17、）AThe shore is bluff and rocky 海岸是懸崖和石壁BOf offshore exposed rocks 岸邊的石頭CSubmerged reefs cause prominent breakers 被淹沒(méi)的暗礁形成了明顯的開(kāi)花浪DThe lookout tower is marked with radar reflectors 了望塔上安裝了雷達(dá)反射器1178. What is TRUE when operating in fog and other vessels are detected by radar _B_ 在霧中，當(dāng)有他船被雷達(dá)探測(cè)到時(shí)，下列哪一句話(huà)是正

18、確的（）AYou should make an ample change to port for a vessel crossing on the starboard bow 你應(yīng)大角度向左轉(zhuǎn)向，因?yàn)橛幸粭l船正橫越你船右船首BYou should maneuver in ample time if a close-quarters situation is developing 如果正在形成緊迫局面，你應(yīng)及早采取行動(dòng)CYou should determine the course and speed of all radar contacts at six minute intervals 你

19、應(yīng)每6分鐘判斷一次所有回波的航向及航速（）DLong-range scanning will provide early warning of ALL other vessels within the radar's range 遠(yuǎn)距離掃描可及早提供雷達(dá)量程內(nèi)內(nèi)所有其他船舶的碰撞危險(xiǎn)情況1180. What will cause the ARPA to emit a visual alarm，audible alarm，or both _C_1427什么情況下，ARPA會(huì)發(fā)出聲響和/或燈光光警報(bào)（）AAn acquired target entering into a guard zo

20、ne 已捕捉的目標(biāo)進(jìn)入警戒區(qū)BA tracked target lost for one radar scan 在一次掃描中，已跟蹤的一個(gè)目標(biāo)丟失了CA tracked target entering your preset CPA-TCPA limits 已跟蹤的一個(gè)目標(biāo)正在進(jìn)入你預(yù)設(shè)的CPA-TCPA范圍DA target being initially detected within a guard zone 在警戒區(qū)內(nèi)初次發(fā)現(xiàn)目標(biāo)1181. When the relative motion display is selected all tracked objects will dis

21、play _A_ vectors 當(dāng)使用相對(duì)運(yùn)動(dòng)顯示方式時(shí)，所有被跟蹤的目標(biāo)將顯示（）矢量線(xiàn)Amotion 運(yùn)動(dòng)Bstationary 靜止Cdynamical Dflashing 閃爍1182. When using the ARPA in heavy rain，which action should you take _C_1526大雨中使用ARPA，應(yīng)采取什么行動(dòng)（）AIncrease the radar gain to pick up weak echoes through the rain 增大增益，以便于雨中得到微弱回波BIncrease the STC setting to re

22、duce close-in spurious signals 增大海浪干擾抑制，以減少近距離內(nèi)的假回波CNavigate as though the effective range of the radar has been reduced 應(yīng)假定雷達(dá)的有效工作距離受雨影響而減小，謹(jǐn)慎駕駛DIncrease the range of the inner and outer guard rings 增大內(nèi)、外警戒圈之間的范圍1183. When using the radar for navigating _C_ 當(dāng)使用雷達(dá)助航時(shí)（）AThe best fix is obtained by us

23、ing a tangent bearing and a range 使用雷達(dá)觀測(cè)一個(gè)目標(biāo)的方位和距離是最佳的定位方法BAnd using two radar ranges for a fix，the objects of the ranges should be close to reciprocal bearings 當(dāng)使用兩個(gè)目標(biāo)的雷達(dá)距離定位時(shí)，這兩個(gè)目標(biāo)應(yīng)可能成一直線(xiàn)（方位相反）CAnd using ranges，the most rapidly changing range should be measured last 使用距離（使用方位變化判斷碰撞危險(xiǎn)）時(shí)，變化最快的目標(biāo)應(yīng)最后測(cè)

24、量DAnd crossing a radar range of one object with the visual bearing of a second object，the two objects should be 110° apart 分別使用一個(gè)目標(biāo)的雷達(dá)距離和一個(gè)物標(biāo)的目測(cè)方位定位，兩物標(biāo)間的方位交角應(yīng)大于110°1184. Which condition indicates that your radar needs maintenance _A_ 下列哪一種情況表示你船雷達(dá)需要維修了（）ASerrated range rings鋸齒形距標(biāo)圈 BIndire

25、ct echoes 間接回波CMultiple echoes 多次回波DBlind sector 扇形盲區(qū)1185. Which general statement concerning radar is FALSE _B_1581下列有關(guān)雷達(dá)的一般描述哪一句是錯(cuò)誤的（）ARaising the antenna height increases the radar range 增大天線(xiàn)高度，可增大雷達(dá)的有效量程BThe ability of radar to detect objects is unaffected by weather conditions 雷達(dá)的控測(cè)物標(biāo)的能力不受天氣影響C

26、Radar bearings are less accurate than radar ranges 雷達(dá)方位不如雷達(dá)距離精度高DRadar should be checked regularly during clear weather to ensure that it is operating properly 當(dāng)天氣情況良好時(shí)，應(yīng)經(jīng)常檢查雷達(dá)的工作情況，以確保雷達(dá)工作正常1186. Which statement concerning the operation of radar in fog is TRUE _D_ 霧中使用雷達(dá)助航，下列描述哪一句是正確的（）ARadar range

27、s are less accurate in fog 霧中，雷達(dá)測(cè)距的精度變差BNavigation buoys will always show up on radar 助航浮標(biāo)總是能在雷達(dá)上顯示出來(lái)CA sandy beach will show up clearer on radar than a rocky cliff 在雷達(dá)上沙灘比石質(zhì)懸崖回波更清晰DSmall wooden boats may not show up on radar 雷達(dá)上小木船可能顯示不出來(lái)1187. You are scanning the radar screen for a buoy fitted wit

28、h raconHow should this signal appear on the PPI display _A_ 使用雷達(dá)搜索一個(gè)帶有雷達(dá)反射器的浮標(biāo)，在PPI上該目標(biāo)回波會(huì)如何顯示（）AStarting with a dash and extending radially outward from the target 從目標(biāo)回波處發(fā)出一個(gè)快速向外延伸的光柱BAs a broken line from center of PPI to the target 從PPI中心到目標(biāo)回波之間出現(xiàn)一道虛線(xiàn)CStarting with a dot and extending radially in

29、ward from the target 從目標(biāo)回波處開(kāi)始，先出現(xiàn)一外點(diǎn)，然后迅速向中心延伸DStarting with a dash and extending to the right of the target從目標(biāo)回波處發(fā)出一個(gè)向右延伸的光柱1188. You have another ship overtaking you close aboard to starboardYou have 3 radar targets bearing 090°relative at ranges of 0.5 mile，1 mile，and 1.5 milesIn this case，t

30、he unwanted echoes are called _A_1821當(dāng)你近距離追越一條在右舷的船舶時(shí)，雷達(dá)觀測(cè)到在你船右正橫方位上有3外回波，距離分別為0.5、1、1.5海里，出現(xiàn)這種情況時(shí)，哪一個(gè)回波不是你所要的（）AMultiple echoes 多次回波BSpoking 輻射回波，輪輻回波CIndirect echoes 間接回波DSide-lobe echoes 旁瓣回波1189. Your ARPA has automatic speed inputs from the logDue to currents，the log is indicating a faster spee

31、d than the speed over the groundWhat should you expect under these circumstances _D_ 你船ARPA雷達(dá)使用自動(dòng)從計(jì)程儀輸入的航速，由于受流的影響，計(jì)程儀航速大于實(shí)際對(duì)地航速，你估計(jì)會(huì)出現(xiàn)下列哪一種情況（）AThe generated CPA will be less than the actual CPA 雷達(dá)計(jì)算的CPA會(huì)小于實(shí)際CPABThe generated TCPA will be later than the actual TCPA 雷達(dá)計(jì)算的TCPA比實(shí)際TCPA遲CThe range of in

32、itial target acquisition will be less than normal 初次捕捉物標(biāo)的距離將小于正常情況下的距離DThe targets true course vector will be in error 物標(biāo)的真航向矢量將出現(xiàn)誤差1190. Your ARPA has been tracking a target and has generated the targets course and speedThe radar did not receive a target echo on its last two scans due to the weathe

33、rWhat should you expect under these circumstances _A_ 你船的ARPA雷達(dá)已經(jīng)對(duì)一個(gè)目標(biāo)進(jìn)行跟蹤并算出了該目標(biāo)的航向和航速，但因天氣原因，最近兩次的掃描，雷達(dá)沒(méi)有收到該目標(biāo)的回波，你估計(jì)會(huì)出現(xiàn)下列哪一種情況（）AThe ARPA will generate data as if the target was still being tracked by radar 如果該目標(biāo)仍處被跟蹤狀態(tài)，ARPA雷達(dá)將算出該目標(biāo)的各項(xiàng)數(shù)據(jù)BThe ARPA will give an audible and/or visual lost target ala

34、rm ARPA雷達(dá)將用聲響信號(hào)發(fā)了警報(bào)CThe ARPA will generate data based on sea return echoes from the vicinity where the target was lost ARPA雷達(dá)將根據(jù)所丟失的目標(biāo)附近的海浪回波算出各項(xiàng)數(shù)據(jù)DThe ARPA has lost all memory of the target and must recompute the target data ARPA雷達(dá)會(huì)因失去該目標(biāo)的各項(xiàng)已知數(shù)據(jù)，且必須重新計(jì)算1191. Your ARPA has two guard zonesWhat is the

35、 purpose of the inner guard zone _B_ 你船ARPA雷達(dá)設(shè)有兩道警戒區(qū)，內(nèi)圈警戒區(qū)起什么作用（）AAlert the watch officer that a vessel is approaching the preset CPA limit 提醒駕駛員有他船接近預(yù)設(shè)的CPA范圍BWarn of small targets that are initially detected closer than the outer guard zone 由于小目標(biāo)可能漏過(guò)處圈警戒區(qū)，當(dāng)進(jìn)入內(nèi)圈警戒區(qū)時(shí)，仍可被探測(cè)到CGuard against target loss

36、during critical maneuvering situations 防止在船舶臨界操縱狀態(tài)下出現(xiàn)目標(biāo)丟失DSound an alarm for targets first detected within the zone 當(dāng)目標(biāo)初次進(jìn)入探測(cè)范圍時(shí)發(fā)出警報(bào)1192. Your radar displays your ship off centerAs you proceed on your course， your ship's marker moves on the PPI scope while echoes from land masses remain stationa

37、ryWhat is this display called _B_1864你船雷達(dá)采用偏心顯示方式，當(dāng)你船沿航向航行時(shí)，陸標(biāo)回波保持不動(dòng)，但你船本船回波在顯示器上移動(dòng)，這種顯示方式叫做（）AOff center 偏心顯示BTrue motion 真運(yùn)動(dòng)顯示CStabilized 穩(wěn)定顯示DHead up 艏向上顯示1193. Your radar is set on a true motion displayWhich of the following will NOT appear to move across the PPI scope _A_1865你船雷達(dá)設(shè)定于真運(yùn)動(dòng)顯示方式，下列哪種

38、物標(biāo)回波不會(huì)在顯示器上移動(dòng)（）AEchoes from a buoy 浮標(biāo)回波BOwn ship's marker 本船回波CEcho from a ship on the same course at the same speed 某條同向速船舶的回波DEcho from a ship on a reciprocal course at the same speed 某條反向同速船舶的回波1260. It is dangerous for vessels without the use of radar _B_ the estuary （入?？?、河口灣、湖港區(qū)）對(duì)于（）船舶密集區(qū)域的船舶，不使用雷達(dá)是危險(xiǎn)的ATo get BTo approach 接近CTo proceed繼續(xù)進(jìn)行DTo close把關(guān)上1261. It may be found that，in certain circumstances，Radar Beacon can cause unwanted interference particularly _A_773有時(shí)，在某種特殊情況下，雷達(dá)反射器會(huì)形成干擾回波，特別是（）AAt cl