抛物线y=x2-2mx+m2+m+1的顶点在[ ] A.直线y=x上 B.直线y

题型:选择题

问题:

抛物线y=x2-2mx+m2+m+1的顶点在[ ]

A.直线y=x上

B.直线y=x+1上

C.直线y=-x-1上

D.直线y=x-1上

考点:二次函数的图像
题型:选择题

预防维生素D缺乏性佝偻病服用维生素D()

A.每日100IU

B.每日200IU

C.每日400IU

D.每日1000IU

E.每日4000IU

题型:选择题

下列哪项与双腔气管导管的特点不符()

A.可使左右总支气管的通气暂时隔开

B.可仅用健侧管长时间施行麻醉和通气

C.可随时分别吸除其中的分泌物

D.可按需将患侧管敞开以引流肺内分泌物

E.可按需对两侧肺进行不同方式通气

题型:选择题

以下关于视图叙述不正确的是______。

A.视图是由从数据库的基本表中选择出来的数据组成的逻辑窗口

B.视图是一个虚表

C.数据库中不仅存放视图的定义,还存放视图包含的数据

D.基本表中的数据库如果发生了变化,从视图中选取出来的数据也随之变化

题型:选择题

Many private firms in coastal provinces have difficulty hiring employees, for they feel that the college students request high salary but have no practical skills. The students, on the other hand, feel frustrated at the job market because the pay is low.

Topic: Is the pay too high or too low


Questions for Reference:
1. What do you think of the employers’ viewpoint
2. If you were a graduate, would you accept low pay for your first job Why or why not
3. Some people think college graduates are no better than vocational school students. Do you agree

题型:选择题

某游客在购买商品时,保安怀疑其偷了商品当场搜寻,并将其挂包扯坏,按《消费者权益保护法》规定,该超市是否应负责任应负什么责任?

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