皮皮学，免费搜题
登录
搜题
【简答题】
证明方程 在区间 内至少有一个实根。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】If over a period of time, the oi1 film partially disappears, so that dry areas are formed on the cylinder wall, these areas and the piston suces will by frictional interaction, become finely scuffe...
A.
micro-seizure
B.
sticking
C.
scratched
D.
breakage/collapse
【单选题】If the compression rings on a diesel engine piston become stuck in the ring groove, the cause may be due to ______________.
A.
excessive ring action
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】The piston rings if found worn out _____ and supplied by shipchandler.
A.
must replace
B.
must to be equipped
C.
has to be repaired
D.
have to be renewed
【单选题】If due to thick and hard deposits of carbon, the piston rings cannot move freely in their grooves, dark areas will often appear on the upper part of the cylinder wall (may not be the risible at port i...
A.
micro-seizure
B.
sticking
C.
scratched
D.
breakage/ollapse
【单选题】If due to thick and hard deposits of carbon, the piston rings cannot move freely in their grooves, dark areas will often appear on the upper part of the cylinder wall (may not be the risible at port i...
A.
micro-seizure
B.
sticking
C.
scratched
D.
breakage / collapse
【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
相关题目：