单项选择题

Modem engines （） exhaust gas driven turbo-chargers to supply pressurized fresh air for scavenging and supercharging.

A.make use of
B.have made the use of
C.by means of
D.make advantage of

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单项选择题

A.are made of
B.are made from
C.make use of
D.are used to

单项选择题

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

单项选择题

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