The pressure differential across a diesel engine lube oil system duplex filter should be checked to ________.
A.determine the need for filter cleaning
B.measure any change in oil viscosity
C.prevent damage to the filter
D.determine the need for batch filtration
第1题:
A. Snapshot
B. Incremental
C. Copy
D. Differential
第2题:
________ the vessel have no safety radiotelegraphy certificate at the time of her delivery,she ________ be held to be unseaworthy.
A.If/may
B.Will/shall
C.Should/would
D.Would/should
第3题:
对于环境已经恶化的区域,更适合采用()制定指标 For regions where the environment has been deteriorated, it is more appropriate to adopt () for indicator settlement
A.pressure-state-response框架 The pressure-state-response framework
B.state-pressure-response框架 The state-pressure-response framework
C.response-pressure-state框架 The response-pressure-state framework
D.response-state-pressure框架 The response-state-pressure framework
第4题:
A. Daily
B. Incremental
C. Normal
D. Differential
第5题:
______ it rain tomorrow moring, the loading ______.
A.Should / will be postponed
B.If / shall be postponed
C.Should / would be postponed
D.If / has to be postponed
第6题:
PID是比例、积分、微分的缩写 Proportional-Integral-Differential。