题目内容

设X服从指数分布，则一定有P(X>3|X>1)=P(X>4|X>2)成立。（）

A. 对
B. 错

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Directions: Listen to Recording 2.2, and complete the following extracts.Nature’s Way Foods is a food- 1 company based on the south 2 of England. We put 3 product, the majority of which is 4 and fruit, into various types of 5 for the major retailers and various food-service companies in the UK. Examples of retailers would be Tesco’s, Morrison’s and Waitrose, and 6 food-service companies, our biggest 7 is McDonald’s, which I’m sure most of you will be 8 with.

在校正车架的扭曲损伤时，对于车身较高的部件，拉伸时应使用（）。

A. 液压顶杆
B. 下拉式夹具
C. 尼龙带

下面叙述正确的是（）。

A. 按与碰撞损坏相反的顺序拉伸
B. 单向拉伸更省力.更快捷
C. 复合拉伸使板件的受力加大

对中立柱进行拉伸时应使用（）。

A. 钢丝绳
B. 尼龙带
C. 只要能夹紧的钣金工具都可以