單項選擇題A stage should only be rigged（）.

A.over the bow or stern of a vessel
B.over the flat sides of a vessel
C.over the open water
D.over the dockside


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1.單項選擇題A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be（）.

A.replaced in its proper location if weight loss is no more than 15%
B.replaced in its proper location if weight loss is no more than 25%
C.labeled empty and recharged as soon as possible
D.labeled empty and replaced in its proper location regardless of weight

2.單項選擇題A special daymark is a（）.

A.red-and-white octagon
B.daymark with a yellow stripe on it
C.green square
D.yellow diamond

3.單項選擇題A spanner is a （）.

A.cross connection line between two main fire lines
B.special wrench for the couplings in a fire hose line
C.tackle rigged to support a fire hose
D.None of the above

4.單項選擇題A slow，gradual fall of the barometer indicates approaching（）.

A.gale force winds within 12 hours
B.blizzard conditions
C.deteriorating or unsettled weather
D.heavy，wind driven rain

5.單項選擇題A slow rise in the barometric pressure forecasts（）.

A.rainy weather for the next 48 hours
B.high seas
C.improving weather conditions
D.deteriorating weather conditions