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【多选题】
下列对于安全生产许可证的说法正确的有()。
A.
安全生产许可证有效期为五年。
B.
未取得安全生产许可证的企业不得从事建筑施工活动。
C.
建设主管部门在颁发施工许可证时必须审查安全生产许可证。
D.
未发生死亡事故的许可证有效期届满时自动延期。
E.
发生死亡事故的许可证有效期届满时,办证机关同意可延期。
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举一反三
【单选题】渗碳体的力学性能特点是( )。
A.
塑性好,硬度高
B.
硬度高、韧性好
C.
强度高、韧性差
D.
硬度高、韧性差
【简答题】One of the really nice features about e-mails is that they allow us to send files as attachments to other users. This is a very good thing. If I'm working with a colleague and want to send him an imag...
【简答题】This B/E is preferred by the seller and buyer because they do not worry about payment by using it.
【多选题】广义的就业信息的内容包括()。
A.
社会信息
B.
供求信息
C.
个人信息
D.
学校概况
【多选题】two-thirds / lied / age / about / that / they / about their / said
A.
​two-thirds
B.
lied
C.
age
D.
about
E.
that
F.
they
G.
about their
H.
said
【单选题】What does fossil and molecular evidence tell us about our earliest ancestors?
A.
They experienced more climate changes than we do today.
B.
They were forced to travel between food patches.
C.
They could cover more ground with less energy.
D.
They were much taller than modern man.
【单选题】According to they have told m e, they should return in about three days.
A.
that
B.
which
C.
what
D.
any
【简答题】渗碳体的力学性能特点是 。
【单选题】渗碳体的力学性能特点是( )。
A.
硬而脆
B.
软而韧
C.
软而脆
D.
硬而韧
【多选题】Listen to three people talking about memory, The check the things they talk about.
A.
names,faces ,dates
B.
places
C.
jokes
D.
words
E.
birthdays
F.
directions
G.
information about products
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