【名词&注释】
磨损率(wear rate)、柴油机(diesel engine)、铸铁气缸套(cast iron cylinder sleeve)
[单选题]局部螺距等于()(ΔL为螺距规量杆的升程α为螺距规水平杆转过的角度)。
A. 360•ΔL/α
B. ΔLα/360
C. 360/ΔLα
D. α/ΔL360
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学习资料:
[单选题]对每台不能换向的发动机在冷机条件下连续起动次数应不少于()次。
A. 3
B. 6
C. 12
D. 15
[单选题]大型低速柴油机铸铁气缸套的异常磨损率()mm/kh。
A. >0.08
B. >0.1
C. >0.2
D. >0.5
[单选题]Before replacing a piston you should check the rings to see that all clearances and gaps are () the permissible tolerances.
A. above
B. at
C. over
D. withi
[单选题]The hydraulic () is used to control engine speed.
A. motor
B. pump
C. governor
D. capsta
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