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【判断题】
斜齿轮啮合时，其齿面上的接触线是与齿轮轴线平行的。()A.
正确
B.
错误
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【简答题】Listening 1 Popularity of different entertainment media Carol Day’s class done a survey in their year into the popularity of different kinds of entertainment media. Here, Ms Day is telling her class a...
【简答题】Listening 1 Popularity of different entertainment media Carol Day’ s class done a survey in their year into the popularity of different kinds of entertainment media. Here, Ms Day is telling her class ...
【单选题】Tom's score on the English test is the lowest in his class he ______ have studied very hard.
A.
may
B.
must
C.
should
D.
can
【简答题】完形填空。 Carol and Susan were great friends. They were in the same class at __ 1 __ , and they often played together after school. When Carol was eight years __ 2 __ , her mother had a baby. Carol was __...
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