263. When may the automatic identification system (AIS) be switched off? A. At any time as long as it is properly logged B. At the Master?s professional judgment

C. Only when the vessel is at anchor in port D. Under no circumstances

Key: B自动识别系统何时可以关闭？根据船长的职业判断力。

264. The standard sized flanges provided at every strategically positioned fire hydrant on board as

_____. A. isolated valve

B. international shore connection Key: B

准规格的法兰配备在船上每个战略位置的消防栓上，作为国际通岸接头。

265. _____ scans (审查) the day and month of each year that corresponds to the date of expiry of

relevant document or certificate. A. Date

B. Anniversary date （周年日） Key: B

周年日审查相关文件或证书的到期日相对应的每年的日期和月份。 266. The dangerous cargo manifest does not indicate ____. A. the stowage location of hazardous material aboard the vessel B. a description of the packaging (drums, boxes, etc.) C. UN identification number

D. The net weight of each hazardous cargo

危险货物载货单不显示船上危险货物的存放位置。 Key: A

267. The difference between the displacement of “light” and the “loaded” indicates _____. A. maximum carrying capacity B. maximum cargo capacity Key: A

“轻载”和“载货”排水量之间的差表示最大承载能力。 268. Bulk cargo refers to _____.

A. cargo which occupies a large volume of space B. cargo which requires refrigeration C. cargo which is very dense

D. homogeneous cargo not enclosed in a container key: D

散货指的是没有围闭于容器内的同种货物。 269. A red triangular daymark marks ______.

C. maximum displacement capacity D. maximum reserving capacity C. Period D. Inspected date C. relief valve D. fire control plan

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A. the centerline of a navigable channel B. the starboard side of a channel

C. a prominent object of navigational interest that has no lateral significance D. an area of a channel where passing another vessel is permitted Key: B

红色三角形日标标示水道右侧。

270. When dragging of an anchor occurs, you must be back it up with a piggyback (backing)

anchor or _____. A. reduce the riser tension B. reposition it at a greater range Key: B

船舷走锚时，你必须跑备锚来辅助，或在更远距离上给锚重新定位（重新跑到一个位置）。 271. Various researches have determined that the biggest wave load appears when a wave length is

_____ the ship?s length. A. greatly larger than B. much smaller than Key: C

各类研究已经确定当波长大致等于船长时，出现最大波浪载荷。

272. When two power-driven vessels are crossing, the vessel which has the other to starboard must

keep out of the way if _____. A. she is the faster vessel

B. the situation involves risk of collision C. the vessels will pass half a mile of each other D. whistle signals have been sounded Key: B

两机动船交叉相遇时，如果局面陷入碰撞危险，他船在其右侧的船舶必须让路。 273. You can expect frontal activity when two air masses collide and _____. A. their barometric pressures and temperatures are the same B. there are differences in how they track along the jet stream

C. there are no significant differences between their temperatures and moisture content D. there are significant differences between the temperature of each air mass Key: D

当两气团相撞并且气团之间存在显著温度差时，你预料会有锋面活动。

274. Which information does the outer ring of a compass rose on a nautical chart provide? A. Variation B. True directions Key: B

航海图上罗经花外圈提供什么信息？真方向。

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C. change the winch D. change the anchor heading

C. approximately equal to D. not related to

C. Magnetic directions

D. Annual rate of variation change

275. You are underway in heavy fog. You hear the fog signal of a vessel which is somewhere

ahead of your vessel. You must _____. A. slow to moderate speed and navigate with caution B. maintain speed and sound the danger signal C. stop engines and navigate with caution

D. slow to bare steerageway and navigate with caution

Key: D你船在浓雾中航行，你听到你船前方某处一船的雾号，你必须将航速降低到维持舵效并谨慎航行。

276. Fleet weather forecast messages are the expected conditions in _____. A. a certain area B. all ocean areas Key: A

船队气象预报信息是某一地区预计的天气情况。

277. Assuming an even transverse distribution of weight in a vessel，which condition could cause

a list?

A. Empty double-bottoms and lower holds，and a heavy deck cargo B. Flooding the forepeak to correct the vessel's trim C. Having KG smaller than KM D. Having a small positive righting arm KEY: D

假定船上重量横向均匀分布，那种情况会造成横倾？有一个小的正扶正力臂。 278. The ECDIS will ____ the paper-based chart in the near future. A. supersede key: A

在不久的将来，ECDIS会取代纸质版海图。

279. ______ the repeater compass with the master compass，please． A. Similize Key: C

请将分罗经与主罗经同步。

280. It is important to get familiarized with the emergency exits onboard. When should this be

done?

A. within a week B. immediately after boarding Key: B

熟悉船上的紧急出口很重要。什么时候这样做？登船之后立即趋势熟悉。 281. Radiation fog is more commonly encountered in _____. A. spring

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C. some areas D. important areas

B. replace C. substitute D. coexist with

B. Clock C. Synchronize D. Position

C. before boarding

D. when you have some extra time

B. later winter

C. autumn key: C

在秋季更常遇到辐射雾。

D. end of summer

282. The damaged cargo is not allowed to export without _____. A. repairing or replacing B. to repair or to replace Key: C

受损货物若不维修也不更换，不允许出口。

283. When compared to air temperature, which factor is most useful in predicting fog? A. Vapor pressure B. Dew point Key: B

与气温相比较时，预测雾哪个因素最有用？露点。

284. If you have steel wire ropes leading in the same direction with other ropes, which will take

the most of the load? A. Steel wire rope B. Manila Key: A

如果你使用钢丝缆绳与其他缆绳走向相同，哪种缆绳承受最大负荷？钢丝绳。

285. Positions read from this chart should be _____ 0．03 minutes Northward and 0.22 minutes

westward. A. shifted Key: A

从这张海图上读取的位置应向北移动0.03分，向西移动0.22分。 286. When shall the stand on vessel change course and speed?

A. The stand-on vessel may change course and speed at any time as it has the right-of-way B. After the give-way vessel sounded one blast in a crossing situation C. When action by the give-way vessel alone cannot prevent collision D. When the two vessels become less than half a mile apart Key: C

直航船何时改向改速？当让路船采取的行动无法避免碰撞时。

287. A current perpendicular to a vessel's track has the greatest effect on the vessel's course made

good _____. A. at high vessel speeds B. at low vessel speeds Key: B

C. in shallow water D. in deep water

B. removed

C. changed

D. altered

C. Nylon

D. Polypropylene rope C. Barometric pressure D. Absolute humidity C. being repaired or replaced D. to be repaired or replaced

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