人力制动机踏板或支架弯曲、变形时调修,裂纹、腐蚀严重时更换;组装螺栓须紧固后()。

题型:单项选择题

问题:

人力制动机踏板或支架弯曲、变形时调修,裂纹、腐蚀严重时更换;组装螺栓须紧固后()。

A.紧固

B.焊固

C.点焊

考点:铁路货车段检修技术知识竞赛铁路货车段检修技术知识竞赛题库
题型:单项选择题

How much did you ______ the house?

A.pay for

B.cost

C.spend on

D.take

题型:单项选择题

Some Americans judge success on the length of his vacations. The man who gets a month’s vacation each year consider himself more successful than the man gets two weeks. Many people want to be teachers because it are teachers who can get three-month vacation every year. Some college teachers who teach the three classes consider themselves less successful than that who teach only one or two, or none in all. In short, the less work Americans do, the less successful they consider themselves.

题型:单项选择题

关于完全性葡萄胎的定义错误的是()

A.整个子宫腔内充满水泡状组织

B.无胎儿及其附属物

C.滋养细胞增生

D.染色体核型常是三倍体

E.绒毛水泡状水肿

题型:单项选择题

要求列车乘务组拧紧人力制动机时,应鸣示拧紧人力制动机信号()。

A、一短声

B、二短声

C、三短声

D、连续短声

题型:单项选择题

假定在封闭的条件下,某国国内只有两个生产部类,第Ⅰ部类生产生产资料,第Ⅱ部类生产生活资料。2005年该国国内两大部类资本构成状况如下:

第Ⅰ部类 第Ⅱ部类
不变资本(c) 800 700
可变资本(v) 200 300
剩余价值(m) 300 200

请回答:
(1)该国国内社会总资本周转能否顺利进行为什么
(2)如果社会总资本周转不能顺利进行,市场能否自发进行调节
(3)上述两个问题对我国发展社会主义市场经济有何启示

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