单项选择题
Which of the following relationships should occur between the temperature developed in a combustion space, and the compression ratio of the engine?（）
A.Higher compression ratios create higher temperature
B.Higher temperatures create higher compression ratios
C.low temperatures create higher compression ratios
D.Higher compression ratios create low temperatures
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A.torque wrench
B.monkey wrench
C.pipe wrench
D.slugging wrench -
单项选择题
Which of the listed types of starting systems is often used on large, low-speed, direct reversing, main propulsion diesel engines?（）
A.Electric
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In a large, low-speed diesel engine the clearance between the piston crown and cylinder head is found to be excessiveIn order to correct for this, you should（）
A.build up the piston crown by metal spraying
B.build up the cylinder head by metal spraying
C.insert shims between the crankpin bearing box and the connecting rod foot
D.install a thinner head gasket
