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【简答题】
以下4种轴承 N307/P4、6207/P2、30207、51307中,______的公差等级最高,______的极限转速最高,______承受轴向力最大,______不能承受轴向力。
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【简答题】Complete the following sentences with appropriate phrasal verbs formed from the verbs given below. Pull make run ask cut give set hold keep leave It has been made a ...
【简答题】A farmer didn't want his men to wear shoes. “If they wear shoes, they won't do farm work well,” he said. After that he made the rule “No Shoes ! ” all over the farm. No one dared( 敢于 )to wear shoes. T...
【简答题】化学纤维分为 、合成纤维和无机纤维。
【单选题】He made _____ a rule to do an hour ’ s work in the garden every day.
A.
that
B.
what
C.
it
D.
which
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