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【单选题】
用汽缸压力表检测某汽缸的压缩力偏低,向该缸火花塞注入少许机油后再次测量,发现汽缸压缩力有明显上升,故障的原因是该缸的A.
气门导管磨损松旷
B.
气门密封圈老化失效
C.
活塞环磨损
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举一反三
【单选题】From the passage we can conclude that the US has come to realize ______.
A.
the weakening of the US dollar can result in trade deficits
B.
the lower the retail prices, the greater the profits
C.
tourism can make great contributions to its economy
D.
visitors to the US are the wealthiest in the world
【单选题】Many lifestyle patterns do such _____ great harm to health that they actually speed up _____ weakening of the human body. [ ]
A.
a; /
B.
/; the
C.
a; the
D.
/; /
【简答题】工业企业在产品生产过程中通常会存在一定数量的在产品，在产品应包括对外销售的自制半成品
【简答题】网页中常见的图片格式有jpg格式,( )格式和( )格式。验
【简答题】简述普多夫金对蒙太奇的分类。
【单选题】The awarding of lands as _________ to the nobleman led to the weakening of the central government.
A.
domains
B.
donations
C.
notations
D.
congratulations
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