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【单选题】
可以适应较大变形量而广泛应用于大跨度桥梁的伸缩装置是:
A.
嵌固对接式橡胶伸缩缝
B.
填塞式对接伸缩缝
C.
模数支承式伸缩缝
D.
梳形钢板伸缩缝
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参考答案:
举一反三
【简答题】Today we take for granted that the mail will be delivered daily at our door. But many years ago it might have been placed in a tree trunk and 【M1】 ______ underneath a rock. In the early days of the ma...
【简答题】What if we delivered within 10 days of
【判断题】YL-235A机电一体化设备中气动控制元件部分只有单控电磁换向阀。
A.
正确
B.
错误
【判断题】布氏漏斗,吸滤瓶,安全瓶,水泵,必须按要求连接紧密不漏气,布氏漏斗下端斜口应正对吸滤瓶测管。
A.
正确
B.
错误
【单选题】听力原文:M: We need stationery for the seminar tomorrow, and the supplier hasn't delivered our order yet. W: He's been quite unreliable lately. We'd better not deal with him anymore. M: Yes, but what abou...
A.
Invitations have not been sent out.
B.
A delivery has not been received.
C.
Many staff members have been fired.
D.
A new deal may be rejected.
【单选题】液压传动和气压传动系统中()动力元件,执行元件,控制元件,辅助元件四部分。
A.
只有液压传动
B.
只有气压传动
C.
两者均包括
【多选题】气动控制系统主要有哪几部分组成?
A.
控制元件
B.
执行元件
C.
辅助元件
D.
检测元件
【单选题】We delivered the criminal_the police.
A.
to
B.
for
C.
of
D.
in
【单选题】The telegram __________ early this morning.
A.
delivered
B.
was delivered to
C.
was delivered
D.
deliveres
【多选题】气动控制元件部分有()
A.
单控电磁换向阀
B.
双控电磁换向阀
C.
气动手爪
D.
磁性限位传感器
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