指出如图所示模锻件结构的不合理之处并画图改正。

搜题请搜索小程序“爱下问搜题”

问题问答题

答案

参考答案：图中应尽量避免模锻件上有薄壁、高肋及直径过大的凸缘。改正后的模锻件结构如图所示。
[*]tu/1304/zhl/zk/jd/jz1.5259F8.jpg

填空题

动词填空用括号内所给动词的适当形式填空。（本大题共8分，每小题1分）

小题1:It’s raining cats and dogs. You’d better ___________ (wear) a raincoat to prevent getting all wet.

小题2:Luke spent as little time as he could ___________ (play) computer games.

小题3:I hope you ___________ (not make) the same mistake again after this serious one.

小题4:Not only the twins but also Tom often ___________ (mix) salt with sugar by mistake in the kitchen.

小题5:I was playing computer games while my father____________ (read) newspapers last Saturday afternoon.

小题6:Those engineers ___________ (build) a model of the future building and left for the USA for more ideas.

小题7:—Can I borrow your eraser? —Sorry, I _________ (use) it at the moment.

小题8:Do you know which factory he went to ___________ (buy) more bricks for his new house?

单项选择题

以商品批发为主的公司，注册有限责任公司的最低注册资本是（）。

A．100万元

B．50万元

C．30万元

D．10万元