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单选题
In comparison to exhaust valves, intake valves of diesel engines may be fabricated from low alloy steels because （）.
A
the beveled edges of the intake valves provide for serf-centering during seating
B
intake valves utilize stellite-coated valve seat inserts which reduce wear
C
the volume of air passing through intake valves is less than the volume of air passing through exhaust valves
D
intake valves are less affected to the corrosive action of exhaust gases
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更多 “单选题In comparison to exhaust valves, intake valves of diesel engines may be fabricated from low alloy steels because （）.A the beveled edges of the intake valves provide for serf-centering during seatingB intake valves utilize stellite-coated valve seat inserts which reduce wearC the volume of air passing through intake valves is less than the volume of air passing through exhaust valvesD intake valves are less affected to the corrosive action of exhaust gases” 相关考题
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单选题In comparison to exhaust valves, intake valves of diesel engines may be fabricated from low alloy steels because （）.A
the beveled edges of the intake valves provide for serf-centering during seatingB
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large conical springsB
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