实现可得性的核心是库存能力。

简述电梯的曳引传动的原理及特点。

Hi, boys and girls! Welcome to our museum. It’s free. You don’t have to pay any money. But we have some rules for you. Please remember them and do as I say. Firstly, don’t have food or drink here. You may make our museum dirty. Secondly, you can take photos here, but don’t touch(触摸) the things here. Thirdly, keep quiet in the museum. Don’t talk loudly. Fourthly, the museum is not open after five o’clock in the afternoon. Please leave(离开) before five. Have a good time here! Thank you.

小题1:There are some rules for a _____.

A. store               B. park           C. museum

小题2:What’s the Chinese meaning of the word “free” in the article?

A. 免费的            B. 迅速的        C.自由的

小题3:Students can _____ in the museum.

A. have food and drink   B. take photos     C. talk loudly

小题4:Students can stay in the museum _____.

A. all day              B. before 5:00 a.m.  C. before 5:00 p.m

小题5:We can learn from the article that _____.

A. students don’t want to pay any money

B. the museum has five rules for the students

C. the speaker hopes the students have a good time

阅读以下材料，完成下题：

长风公司发行可转换债券，规定持有人在转换日以10股换取一份可转换债券，该公司股票的基准是42元。

若长风公司股票的基准价格是30元，转换债券的市场价值是389元，则该可转换债券的转换升水是（）元。

A.8.2

B.8

C.10

D.8.9

在主导厂商的价格领导模型中，不是主导厂商的所有其他厂商都像一个完全竞争者那样行事。

铲运机施工是综合施工包括挖、运、卸三个工序。（）