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【简答题】
普通圆柱蜗杆传动在中间平面上相当于直齿齿条与渐开线齿轮啮合，但同齿轮相比，蜗杆与蜗轮轮齿在节点处啮合时齿面间相对滑动速度______________。
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举一反三
【简答题】用所给词的适当形式填空。 1.This is a _____ (person) question.I won't answer it. 2. I want some _____ (suggest) about what to do next. 3. Peter just _____ (receive) a nice present. 4. I didn't know who _____ (give...
【单选题】听力原文：W: The rate tuition is keeping rising, I'm afraid I won't be able to stay here next year. M: You speak Italian so well! Why don't you tutor students in Italian? Q: What does the man suggest the w...
A.
Try to speak Italian well.
B.
Go to Italy to earn some money.
C.
Work as a tutor to pay her tuition.
D.
Have a trip to Italy to enjoy herself.
【单选题】听力原文：M: Oh my God, it's already 8:40! W: There's no rush. I can take you in the car. M: Won't it make you late? W: No, I'm going right past your place. What does the woman suggest the man doing?
A.
Rush to work.
B.
Go with her together.
C.
Drive her car.
D.
Hurry up.
【简答题】I won't suggest her __________ (尊重) me, but I only advise her not to think too much of herself.
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