单项选择题

On the all-purpose nozzle，the position of the valve when the handle is all the way forward is（）.

A.shut
B.fog
C.solid stream
D.spray

点击查看答案&解析

上一题目录下一题

相关考题

单项选择题

On a vessel carrying grades A，B，C or D cargoes，enclosed spaces where sources of vapor ignition are normally present shall NOT be segregated from cargo tanks by（）.

A.cofferdams
B.galleys
C.pump rooms
D.tanks used to carry liquids having a flash point of 150°F or above

单项选择题

Oil may NOT be transferred unless（）.

A.there are two certificated tankermen on each vessel
B.the vessel is equipped with constant-tension winches
C.discharge containment equipment (i.e. drip pans) are in place
D.All of the above

单项选择题

Of the following，the most important consideration for a tanker is（）.

A.GM
B.the vertical center of gravity
C.the longitudinal center of gravity
D.the stress on the hull