实验动物设施的平面布局常见的（）：一般是一个清洁走廊，两个污

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问题单项选择题

实验动物设施的平面布局常见的（）：一般是一个清洁走廊，两个污染走廊。具有双走廊的优势，便于人流、物流、气流的单向流动。缺陷是如设计不合理，会浪费设施有效饲养空间。

A.无走廊式

B.单走廊式

C.双走廊式

D.三走廊式

答案

参考答案：D

阅读理解

阅读理解。

Mr. Black likes thrillers and action movies very much. And he likes animals too. He has two cats. One

is big and one is small. He likes them very much. One day his good friend Mr. Green comes to see him.

He is very surprised. He finds there are two holes (洞) in the door, a big hole and a small one. He says,

"My dear friend, why are there two holes in your door?" "To let them in and out. " Mr. Black

answers. "But why are there two holes?" asks his friend. "How can the big cat go through (通过) the

small hotel?" he asks.

1. Mr. Black has _____.

A. two small cats

B. two big cats

C. a big cat and a small one

D. a cat and a bird

2. Mr. Green comes to see _____.

A. Mr. Black

B. Mrs. Black

C. the cats

D. the holes

3. Mr. Black wants the_____ to go through the two holes.

A. the big cat

B. the small cat

C. a dog

D. two cats

4. Mr. Black thinks the big hole is only for _____.

A. the small cat

B. the big cat

C. the two cats

D. Mr. Green

5. _____ is not necessary.

A. The big hole

B. The small hole

C. The big door

D. The small door

单项选择题

考虑到特殊行业施工内容的专业要求，设备安装工程一般采用( )方式为宜。

A．公开招标
B．邀请招标
C．议标
D．方案竞赛