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【多选题】
以外国货币作为媒介或载体的经济交易有( )。A.
以外国货币计价结算的对外商品与劳务贸
B.
以外国货币计值清偿的对外货币资本借贷
C.
以外国货币对外进行的直接投资
D.
外汇买卖
E.
以外国货币进行的证券买卖
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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 surfaces will by frictional interaction, become finely scuffe...
A.
micro-seizure
B.
sticking
C.
scratched
D.
breakage/collapse
【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
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