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【多选题】
影响可比产品成本降低率的主要因素包括( )。A.
产品产量
B.
产品品种比重
C.
产品单位成木本
D.
产品的价格
E.
产品的种类和规格
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举一反三
【单选题】The scavenging box is built of a number of sections provided with vertical flanges enabling them _____ together to form. two blocks.
A.
being bolted
B.
bolted
C.
bolting
D.
to be bolted
【简答题】scavenging air box______________ Be manufactured of ____________. Be built of a number of ___________ provided with ____________.
【单选题】How is sealing between the liner and the top of the scavenging air box achieved?
A.
It is achieved by washers.
B.
It is achieved by stuffing box.
C.
It is achieved by the rubber rings fitted into the slots machine-turnecl in the liners.
D.
It is achieved by sealing rings fitted into the slots in the scavenging air box.
【单选题】_____ of the A-frames there is a strong cast iron frame. called the scavenging air box.
A.
At the top
B.
At the bottom
C.
In the top
D.
In the bottom
【单选题】How is sealing between the liner and the top of the scavenging air box achieved?
A.
It is achieved by washers.
B.
It is achieved by stuffing box.
C.
It is achieved by the rubber ring fitted into the slots in the machine-turned in the liners.
D.
It is achieved by sealing ring fitted into the slots in the scavenging air box.
【单选题】How is sealing between the liner and the top of the scavenging air box achieved?
A.
It is achieved by washers.
B.
It is achieved by stuffing box.
C.
It is achieved by the rubber rings fitted into the slots machine-turned in the liners
D.
It is achieved by sealing rings fitted into the slots in the scavenging air box. 通过
【简答题】在极限与配合国家标准中,孔和轴的公差带大小由 决定,公差带位置由 决定。
【单选题】How is sealing between the liner and the top of the scavenging air box achieved? .
A.
It is achieved by washers.
B.
It is achieved by stuffing box.
C.
It is achieved by the rubber rings fitted into the slots machine-turned in the liners
D.
It is achieved by sealing rings fitted into the slots in the scavenging air box.
【单选题】On top of scavenging air box is mounted a strong cast iron frame. for each cylinder known as_____.
A.
cooling jacket
B.
cylinder liner
C.
piston crown
D.
cylinder cover
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