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【单选题】
除氧器水位达到()mm,关闭至除氧器的补水旁路门。A.
2300
B.
2500
C.
2800
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【简答题】机床夹具最基本的组成部分是 元件、夹紧装置和 。
【简答题】《劳动合同法》的立法宗旨是：完善劳动合同制度，明确劳动合同双方当事人的权利和义务，保护谁的合法权益，构建和发展和谐稳定的劳动关系?
【单选题】The underwater listening system was originally designed ______.
A.
to trace and locate enemy vessels
B.
to monitor deep-sea volcanic eruptions
C.
to study the movement of ocean currents
D.
to replace the global radio communications network
【单选题】在Linux系统中，Samba服务允许文件和打印机被用户网络中的所有系统共享，其默认的安全级别是(59)。
A.
share
B.
user
C.
server
D.
domain
【单选题】Internet was originally designed ______
A.
to promote education
B.
to distribute news and comment
C.
to relieve people of worries
D.
to publicize political beliefs
【单选题】What is not true according to the passage?
A.
Boston's new city hall was originally designed by Benjamin Thompson.
B.
Butler Square was originally built in the early twentieth century.
C.
Butler Square is used as a hardware warehouse now.
D.
The space at Quincy Market now is used for restaurants, offices and stores.
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