由承包人采购的材料设备，发包人( )。A．应指定生产厂商B．可_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

由承包人采购的材料设备，发包人( )。

A．应指定生产厂商
B．可建议生产厂商
C．不可指定生产厂商
D．协助进行招标

答案

参考答案：C

填空题

（理科）已知三棱锥O-ABC中，

，点M在OA上，且OM=2MA，N为BC中点，则

=______（结果用

补全对话，情景问答

A. Because my parents want me to stay at home every night.
B. You should talk about your problems with them.
C. Maybe you could get a part-time job in the evenings.
D. What's wrong with you?
E. Well, maybe you should buy some new clothes.

M: You look unhappy.    1
W: Oh... my clothes are out of style. I don't look cool.
M:    2
W: Yes. But I don't have enough money.
M: Huh.     3____
W: Oh, I couldn't.
M: Why?
W:    4____I argued with them about it.
M: Well, you shouldn't argue with your parents.  5___
W: OK.1 will have a try. Thank your!
M: You're welcome
1. ____2.____3.____4.       5.