單項選擇題The term "load on top" is used on many crude oil carriers, is to provide a method for （）.

A.calculating the ullage in the cargo tanks
B.loading ballast by gravity
C.the loading of new cargo into the slop tank as a procedure to minimize pollution
D.calculating the ratio of cargo expansion in a cargo tank


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1.單項選擇題To avoid excessive pressures in the fuel oil filling system during bunkering, you should （）.

A.close the tank filling valves quickly
B.top off all tanks at the same time
C.rill completely all tanks to less than 95% full
D.reduce the loading rate when topping off

2.單項選擇題Which of the precautions listed should be observed when taking on diesel fuel?（）

A.Secure all lighting to the main deck
B.Provide a portable fan to blow away fumes
C.Prohibit smoking in the area
D.Display a black triangle during daylight hours

3.單項選擇題Before the seas get rough, it is a good safety practice to （）.

A.secure loose gear
B.move quickly about the ship
C.increase lighting
D.shutdown auxiliary equipment

5.單項選擇題A carbon dioxide fire extinguisher has been partially discharged, and should be immediately （）.

A.tagged and restowed properly in its rack
B.weighed and the charge loss recorded
C.given to the chief engineer for recharging
D.tagged "empty" and stowed separately from charged extinguishers