【单选题】If the compression rings on a diesel engine piston become stuck in the ring groove, the cause may be due to ______________.
B.
excessive ring temperature
C.
improper ring rotation
D.
excessive ring face wear
【单选题】If the piston ring gap remains insufficient when installing new rings, youshould()
A.
install oversized rings
B.
hone the cylinder liner to allow ring installation
C.
compress the rings tighter with a compressing tool
D.
file the ends of the rings
【单选题】If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?
A.
The oil control rings will seal improperly and wear rapidly
B.
The piston will overheat due to insufficient lubrication
C.
Excessive oil will remain on the cylinder wall
D.
Light brown smoke will emanate from the engine exhaust
【判断题】速写训练,可以使我们的眼、脑、手相互配合,培养快速、准确造型的能力。
【判断题】在CSS中要设置超链接的样式效果,应指定虚类selector。