单选题：Judging from the fact that the other scouts haven't arrived,

题目分类：英语
题目类型：单选题
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题目内容：

Judging from the fact that the other scouts haven't arrived, they__________the bus.
A. might miss
B. could miss
C. must have missed
D. should have missed

参考答案：

答案解析：

已知一蜗杆传动，蜗杆头数k=2，转速n1=1450r/min，蜗轮齿数z=62，求蜗轮转速。

分类：英语题型：单选题

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图中为一齿轮传动，图中数字为各齿轮数，如果轴I的转速n1=730r/min，轴Ⅳ的转速应是多少?其转向与轴I相同吗?

分类：英语题型：单选题

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I want to__________my friendship with her even though I was

I want to__________my friendship with her even though I was hurt by her words.A.

分类：英语题型：单选题

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下列属于“城市交通发展战略研究”的基本工作内容的是（　　）。

分类：英语题型：单选题

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城市规划方法论包括（　　）。

分类：英语题型：单选题

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