The current rates（）excess of 2 kn may

1、The rate of heat transfer between the

The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.Aremain constant along...

2、The current situation of African-Ameri

The current situation of African-Americans presents（）Aa favorable picture　Ba negative pictureCa mixed picture　Dan encouraging picture

3、Excessive alkalinity of the water in a

Excessive alkalinity of the water in an auxiliary boiler can cause （）.Acaustic embrittlement of the boiler metalBacidic corrosion of the boiler metalChard scale deposits on the boiler tubesDetching of the heat exchange surface

4、The velocity of a rotary tidal current

The velocity of a rotary tidal current will be decreased when the Moon is（）.Aat apogeeBnewCfullDAll of the above

5、The safe rate of bunkering heavy fuel

The safe rate of bunkering heavy fuel oil is directly related to the （）.Atype of fuel transfer pump aboardBtemperature of the fuel oil being receivedCsize of the fuel storage tanks ashoreDdistance from the fuel oil storage tanks ashore

6、The rate of expansion of heated fuel o

The rate of expansion of heated fuel oil varies with the （）.AconductivityBviscosityCvolumeDspecific gravity