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【简答题】
解放CA6102型汽车发动机润滑油路中,曲轴主轴颈、 、 、 和分电器传动轴等均采用压力润滑; 、 、 、 、 和凸轮正时齿轮等采用飞溅润滑
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【简答题】[组合填空题] 比较器的参考电压 UR 越小,检测装置的灵敏度就越____(高/低)。若希望灵敏度不要太高,可将 RP 往____(左/右)调节。
【单选题】A lot of countries have gained excellent achievements in space technology, China, _____. [ ]
A.
such as
B.
for example
C.
namely
D.
that is
【简答题】The year 2006 was a busy one for space and technology workers. A planet lost its status and space flights caught the imagination of people around the world. The following is a short list of the major ...
【单选题】The space shuttle program entails the use of sophisticated technology.
A.
enhances
B.
develops
C.
creates
D.
involves
【单选题】If China’s space technology has achieved ____ breakthrough in this field, it really is ____ amazing wonder.
A.
the; an
B.
a; an
C.
不填; the
D.
a; 不填
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