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【单选题】
M4215珩磨机主要由主轴、()、工作台、冷却系统及操纵机构组成。A.
刀头
B.
触头
C.
磨头
D.
刮刀头
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【简答题】The New York Times published an article recently that shows great regret for the 'death of conversation'．It suggests that while technology such as cell phones, e-mails, and Internet posting makes us f...
【单选题】On a diesel engine equipped with a hydraulic speed control governor, hunting in many cases can be corrected by adjusting the______.
A.
accumulator spring compression
B.
balance piston
C.
compensating(补偿) needle valve
D.
proportional piston
【简答题】in many cases 汉语意思
【单选题】An article published recently in the prestigious scientific journal Nature is shedding new light on an important, but hitherto little has been appreciated, aspect of human evolution. In this article, ...
A.
was only recently described in a scientific journal
B.
played an important part in human evolution
C.
is now regarded as more important than the ability to climb trees
D.
is surprising when we consider evolutionary trends
【简答题】Schools throughout the world are experiencing a period of rapid change and, in many cases, are finding that extremely【M1】______ difficult to achieve a balance among a number of critical concerns. Some...
【简答题】短文改错 (共10小题；每小题1分，满分10分) Recently I read an article in a magazine. It was of a mother who was worried about his son just because of he always kept his hair long. The mother thought that was not right,...
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