The delivery rate of an axial piston hydraulic pump is controlled by varying the position
A. tilting box
B. slide block
C. pintle
D. reaction ring
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大型十字头式柴油机只有在______等异常情况下才会产生活塞外圆表面磨损。Ⅰ.过度磨损；Ⅱ.燃烧不良；Ⅲ.装置不正；Ⅳ.敲缸；Ⅴ.拉缸。
A. Ⅰ＋Ⅱ＋Ⅳ
B. Ⅰ＋Ⅳ
C. Ⅲ＋Ⅳ＋Ⅴ
D. Ⅱ＋Ⅲ
At the beginning of the watch the current operational parameters and the condition of all
A. noted by the bridge officer
B. told by last duty engineer
C. observed
D. in the instruction manual
生活水平是由________衡量的。
A. 实际GDP
B. 就业
C. 人均就业
D. 人均实际GDP
E. 人口
When will an Engineer Officer in charge of watch call Chief Engineer？
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