单项选择题
To determine the main bearing clearance of a propulsion diesel engine, you should measure the main bearing shell using a ball anvil outside micrometer and measure the crankshaft journal using a/an （）
A.telescoping
B.ring ‘snap’ gauge
C.inside vernier caliper
D.outside micrometer
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相关考题
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单项选择题
The ignition quality of a diesel fuel is indicated by the （）
A.cetane number
B.volatility point
C.viscosity index
D.octane number -
单项选择题
The ignition quality of a diesel fuel oil is indicated by the （）
A.specific gravity
B.cetane number
C.viscosity
D.calorific valve -
单项选择题
Which of the following conditions could contribute to the cracking of a diesel engine cylinder head?（）
A.Leaking seal ring
B.Insufficient heat transfer from the exhaust valves
C.Block cooling water passages to the head
D.Excessive scavenging air provided to the engine
