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單項(xiàng)選擇題

While reading the station bill, you find "three (3) short blasts on the whistle and three (3) short tings on the general alarm bells," this signal is for （）.

A.abandon ship
B.dismissal from fire and emergency stations
C.fire and emergency
D.man overboard

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單項(xiàng)選擇題

Hydrocarbon vapors are usually detected by the use of the （）.

A.flame safety lamp
B.combustible gas indicator
C.gasometer
D.oxygen indicator

單項(xiàng)選擇題

A fire involving trash and paper waste would be classified as a （）.

A.class A
B.class B
C.class C
D.class D

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