A.instantaneous
B.instantaneously
C.simultaneous
D.simultaneously
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A.An economizer
B.An attemperator
C.A water dram
D.A down-comer tube
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
最新試題
A salinity indicator is used to determine the （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
The usual symptoms of cavitation in a centrifugal pump is （）.
A pressure drop through the refrigerant liquid line may cause （）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
When the steering gear is in operation, you should （）.
The output volume of a positive fixed displacement pump can be changed only by （）.