When and where to go for the on-salary h_爱下问搜题

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问题选择题

When and where to go for the on-salary holiday ____yet.[ ]

A. are not decided

B. have not been decided

C. is not been decided

D. has not been decided

答案

答案：D

单项选择题

根据Lambert-Beer定律，吸收度与浓度和光路长度之间的正确关系式是（）。

A.A

B.B

C.C

D.D

E.E

多项选择题

一个发布组中可以包含下列哪些对象类型？（）

A.Group

B.User

C.Public Folder

D.Contact