A.An economizer
B.An attemperator
C.A water dram
D.A down-comer tube
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A.cap
B.disc
C.tag
D.cover
A.open
B.close
C.opens
D.closes
A.welcome
B.admitted in some special sea areas
C.prohibited
D.acceptable
A.Oil Record Book Part Ⅰ
B.Oil Record Book Part Ⅱ
C.Oil Record Book Part Ⅰ or Part Ⅱ
D.Oil Record Book Part Ⅰ and Part Ⅱ
A.periodically
B.occasionally
C.chronologically
D.additionally
最新試題
If the suction pressure at the refrigeration compressor is below normal, the cause can be（）.
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
A salinity indicator is used to determine the （）.
Which of the following statements is correct concerning heat transfer?（）
If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should （）.
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will （）.
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by （）.