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举一反三
【单选题】In low speed cross-head diesel engine, which of the following is easily damaged? .
A.
The main bearing
B.
The thrust bearing
C.
The cross-head bearing
D.
The crank-pin bearing
【单选题】In low speed cross-head diesel engine, which of the following is easily damaged?
A.
The main engine
B.
The thrust bearings
C.
The cross-head bearing
D.
The crank-pin bearing
【单选题】The word mandate in Paragraph 2 is closest in meaning to ______.
A.
instruction
B.
requirement
C.
command
D.
authority
【单选题】Owing to its _____, the low speed cross-head diesel engine is widely used on board ship as a main engine.
A.
smaller size and simple construction
B.
long life, lower cost and higher reliability
C.
easier operation and management
D.
simple construction and easier management
【单选题】为减小雷达方位定位误差,下述措施中哪项是不对的______。
A.
应正确调节各控钮，使回波图像清晰稳定
B.
应尽量选用调节各控钮，使回波处于2/3半径附近
C.
应尽量选用真北向上显示方式和用EBL测量
D.
应尽量选用船首向上显示方式和用机械方位标尺测量
【单选题】为减小雷达方位定位误差,下述措施中哪项是不对的-------。
A.
正确调节各控钮,使回波图像清晰稳定
B.
尽量选用调节各控钮,使回波处于2/3半径附近
C.
尽量选用真北向上显示方式和用EBL测量
D.
尽量选用船首向上显示方式和用机械方位标尺测量