国标GB1182－80中形位公差有（）个项目。A、4 B、24 C、24 D、14

下列是常用登车桥的是（）.

A.嵌入式登车桥

B.液压式登车桥

C.台边式登车桥

D.移动式登车桥

单词拼写（10分）

小题1:Do you enjoy l      to music ?   --No !

小题2:More and more people in Hangzhou are wealthy enough to a     a car.

小题3:Quite a few people are looking t      the books in that new bookstore.

小题4:Tom will write to you as soon as he a     in Beijing.

小题5:He couldn’t help c ________ when he heard that piece of sad news.

小题6:After ten m      rest, they went on working in the fields.

小题7:If you are more careful when you are taking an exam, you will make f     mistakes.

小题8:Never read your son’s p     letter. He will get mad at you.

小题9:I don’t want to make a wrong d     and regret it later.

小题10:December is the t ________ month of a year.

在传染病流行过程的诸环节中，受社会因素影响最明显的是（）

A.传染源

B.传染过程

C.易感人群

D.传播途径

E.传播因素

根据钢结构设计规范（GB50017-2003），对H形或工字形组合柱宜将腹板在节点域加厚，腹板加厚范围应伸出梁上、下翼缘外不小于（）mm处。

A.100

B.120

C.150

D.200

根据福利经济学的观点，庇古税是为了解决外部性问题而产生的税收。