單項(xiàng)選擇題Holes in the bulwark,Which allow deck water to drain into the sea, are().

A.doggers
B.fidleys
C.freeing ports
D.swash ports


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1.單項(xiàng)選擇題How should cargo tank hatches be protected when the ullage opening is open and the tank not gas free?().

A.With gooseneck vents
B.With warning signs
C.With flame screens
D.With pressure-vacuum relife valves

2.單項(xiàng)選擇題Hygroscopic cargoes should be ventilated when().

A.going from a warm to a cold
B.the dew point of the outside air is greater than the dew point of the air in the hold
C.the dew point of the air in the hold is very low
D.the outside dew point is 16°C and the cargo temperature is 12°C

3.單項(xiàng)選擇題I have no choice()to put such remarks.

A.or
B.and
C.but
D.when

4.單項(xiàng)選擇題I herely request permission to()the ship hull for routine maintenance.

A.put paint on
B.apply paint onto
C.oil
D.paint

5.單項(xiàng)選擇題If a cargo of kerosene were considered too lean to explode, then it must be().

A.above the explosive range
B.within the explosive range
C.below the explosive range
D.None of the above