题目内容

救生艇上应配备手摇泵()。

A. 2台
B. 1台
C. 3台

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焦炭火落时表现的现象为()

A. 荒煤气颜色为蓝白色
B. 荒煤气颜色为黄色
C. 荒煤气颜色为白色
D. 荒煤气颜色为无色

Thelubeoilinthebearingsisdrawnfroma(),usuallylocatedinthebedplate.

A. tank
B. sump
C. vessel
D. bottle

Thelubricatingpipesanddustsshouldbeblownoutwith().

A. atmosphere
B. thefreshwater
C. compressedair
D. chemicalcompounds

Thestepofapilotladderwhichpreventstheladderfromtwistingisthe().

A. Proofbar
B. Shiftingbar
C. Longbar
D. Spreader

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