试题与答案

丝杠传动的滑动丝杠传动是通过丝杠、螺母的螺旋表面的()来传递运动和动力的。A、25B

题型:单项选择题

题目:

丝杠传动的滑动丝杠传动是通过丝杠、螺母的螺旋表面的()来传递运动和动力的。

A、25

B、30

C、35

D、40

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析:脱脂牛奶可以选择性增加食管下端括约肌压力,适用于慢性食管炎患者。

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10 For $ 10. It sounds like a great idea to you. However, you’ll save the same money even if you only buy one thing. A recent survey has found when people see 10 For $10, five for $5 and 1 for $1, their mind usually fools them into thinking it’s a good idea to buy more.
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Where is Everything. Shelves in the supermarkets don’t stay at the same place all the time. The stores are usually doing it on purpose, because if you don’t know where the things are, you’ll spend more time in the store. More time to look around means you will buy more things in the store.
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