分式3x2-4,4(x-2)2,5yx+2的最简公分母是______.

题型:填空题

问题:

分式
3
x2-4
4
(x-2)2
5y
x+2
的最简公分母是______.
考点:最简公分母
题型:填空题

阅读理解。

     Mr Smith has about 2000 clocks in his house. He collects them from his childhood(童年). He puts

these clocks everywhere: on the tables and chairs, in the old car, and even under his bed. But Mrs Smith

doesn’t like these clocks at all. She has to (不得不) clean all the clocks every day. She has to listen to the strike(敲)of the clocks every minute. Even though(即使)with so many clocks, she can't tell the right time!

1. When does Mr Smith collect these clocks?

A. When he is a child.      

B. In 2000.    

C. After school.    

D. In the evening.

2. Where deos Mr Smith put his clocks?

A. On the tables and chairs.  

B. In the drawers.  

C. Under the bed.  

D. Both A and C.

3. What does Mrs Smith have to do every day?

A. Tell the time.    

B. Clean the clocks.    

C. Listen to the music.    

D. Go to work.

4. Why can’t Mrs Smith tell the right time?

A. Because she doesn’t have a clock.

B. Because her clocks are brocken.

C. Because different clocks have different times.

D. Because she can’t see the clocks.

5. How many clocks does Mr Smith have?

A. About 20      

B. About 200.    

C. About 2,000.    

D. About 20,000

题型:填空题

建筑安装工程预算定额包括()。

A.建筑工程预算定额

B.设备安装工程预算定额

C.机械台班定额

D.间接费用预算定额

E.折旧费用定额

题型:填空题

患者女,65岁,胃癌晚期,主诉上腹部钝痛。

学术界认可的癌性疼痛的具体控制目标是()。

A.规范性癌痛管理目标

B.依据0~10数字评分量表(0~10NRS),疼痛控制在3分以下

C.3d内完成药物剂量滴定

D.依据0~5描述评分量表(0~5VRS),疼痛控制在2分以下

E.每天暴发痛和药物解救次数不超过3次

F.提高患者生活质量

题型:填空题

有如下赋值语句
a="你好"
b="大家好"
结果为“大家好”的表达式是

A.b+AT(a,1)

B.b+RIGHT(a,1)

C.b+LEFT(a,3,4)

D.b+RIGHT(a,2)

题型:填空题

可编程序控制器的接线端子座采用插拔式结构的作用是便于()时间。

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