【名词&注释】
轮机长(chief engineer)
[单选题]每桶水中大约滴入多少2.5%的碘溶液后方可饮用：
A. 4滴
B. 6滴
C. 8滴
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举一反三：
[单选题]When the fuel oil is burning in the combustion chamber, it _____.
A. gives up large amount of heat
B. gives off large amount of heat
C. gives up large amount of steam
D. gives off large amount of steam
[单选题]海上求生者一般距过往船多远呼救才有效：
A. 1000米
B. 2000米
C. 3000米
[单选题]活塞顶面裂纹的原因是______。Ⅰ.冷却不良；Ⅱ.过热；Ⅲ.过冷；Ⅳ.顶面积炭严重；Ⅴ.冷却侧结垢严重。
A. Ⅰ＋Ⅱ＋Ⅳ
B. Ⅰ＋Ⅱ＋Ⅳ＋Ⅴ
C. Ⅰ＋Ⅲ＋Ⅴ
D. Ⅰ＋Ⅱ＋Ⅴ
[单选题]Before starting the engine, the air bottle should be ____.
A. pumped up
B. loaded
C. discharged
D. closed
[单选题]The______is used to measure the volume of a liquid or gas through a pipeline within any given period of time
A. flow-meter
B. viscometer
C. micrometer
D. feeler
[单选题]负责加装燃油(驳油)，进行燃油的测量、统计和记录工作的是______。
A. 轮机长
B. 大管轮
C. 二管轮
D. 三管轮
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