某分部工程双代号时标网络计划如下图所示,其中工作G的总时差和自由时差()天。
A. 分别为l和0
B. 均为1
C. 分别为2和0
D. 均为0
【B13】
A. dressed
B. chosen
C. looked
D. acted
公司债券又称企业债券,是股份公司为筹集资金而发行的经营管理权。()
A. 正确
B. 错误
听力原文：W: Have you had any trouble finding a post office？
M: Yes, I am a stranger here.
What does the man mean？
A. He had no problem finding the post office.
B. There are not enough parking post offices.
C. He has no idea where the post office is.
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