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单选题
The engine is reversed by axial displacement of the camshafts In order for this to be carried out, the cams are （） with inclined transition faces.
A
lathed
B
shaped
C
shrunk
D
developed
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考题
单选题In a four-stroke engine the camshaft rotates at （）.A
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单选题If a four-stroke/cycle diesel engine is running at 1550 RPM, the speed of the camshaft will be（）.A
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775 RPMC
1550 RPMD
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单选题In a four-stroke/cycle diesel engine, the camshaft rotates at （）A
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