A.are made of
B.are made from
C.make use of
D.are used to
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A.the clearance of the main bearing
B.the diameter of main bearing
C.the hardness of main bearing
D.the tolerance of main bearing
A.the clearance of the main bearing
B.the play of the miler bearing
C.the gap of the main bearing
D.the tolerance of the main bearing
A.of crosshead type
B.of trunk piston type
C.of low speed type
D.all the above
A.end
B.web
C.pin
D.journal
A.sea cheat
B.air receiver
C.crankcase
D.water box
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In using reduction gears to obtain efficient propeller speeds, （）.
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Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
The minimum speed an engine must attain before ignition can occur depends upon （）.
The main purpose of the piston oil scraper rings is to （）.
When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（）
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）