A.join with
B.mix
C.be equal to
D.be constant
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A.the bottom of the column；the cylinder blocks
B.the top of the column；the cylinder heads
C.the top of the column；the cylinder blocks
D.the bottom of the column；the cylinder heads
A.the inlet valve
B.the outlet valve
C.both the inlet valve and the outlet valve
D.the pump inlet valve
A.8-10℃
B.10-12℃
C.10-15℃
D.10-20℃
A.the starting air distributor
B.the cut-off valve on the air main
C.the main starting valve
D.the air bottle control valve
A.800 KW
B.5120 KW
C.6400 KW
D.4180 KW
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Combustion knock occurring in a diesel engine can be caused by （）.
White smoke exhausting from an operating diesel engine may indicate （）.
The main purpose of the piston oil scraper rings is to （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
In using reduction gears to obtain efficient propeller speeds, （）.
The highest pressure in a diesel engine cylinder normally occurs （）.
An automated diesel engine should normally shut down due to （）
Proper filtering and straining of fuel oil is important because the （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.