【名词&注释】
超声波(ultrasonic)、中心线(center line)、柴油机连杆(diesel engine connecting rod)
[单选题]吊缸检修柴油机连杆螺栓时一定要()。
A. 用扭力扳手或液压拉伸器预紧
B. 用普通扳手的力臂套筒不得随意增长
C. 磁力探伤或着色探伤
D. 超声波探伤
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学习资料:
[单选题]轴系中心线的偏差度应()。
A. 小于允许值
B. 大于允许值
C. 交点在δmax-φmax三角形内
D. 交点在δmax-φmax三角形外
[单选题]If the engine does start on air, but combustion does not immediately begin, the cause may be ().
A. failure of the fuel pumps
B. starting air pressure too low
C. stop valve in air line closed
D. the turning gear still engaged
[单选题]In a typical fuel system, the oil is stored in () in the double bottom.
A. setting tanks
B. service tanks
C. tanks
D. drain tank
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