單項(xiàng)選擇題

A quick and rapid motion of a ship in a seaway is an indication of a(n) （）.

A.large GM
B.high center of gravity
C.excessive free surface
D.small GZ

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單項(xiàng)選擇題

A pumproom is suspected of accumulating gases after a ventilation machinery breakdown. Where should the combustible gas indicator case be placed when testing the pumproom atmosphere for combustible gases? （）

A.In the lower level of the pumproom
B.In the middle level of the pumproom
C.In the upper level of the pumproom
D.On the deck outside the pumproom

單項(xiàng)選擇題

A psychrometer has two thermometers that provide dry bulb and wet bulb temperatures. By comparing these two temperature readings with a set of tables you can determine the （）.

A.atmospheric pressure
B.wind speed
C.relative humidity and dew point
D.wind chill factor