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【单选题】
旅行社存入、续存、增存质量保证()个工作日内向旅游行政管理部门提交相应证明文件。A.
3
B.
5
C.
7
D.
10
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举一反三
【单选题】Imagine fishermen walking down to the seashore, ready to carry out their early morning routine of preparing their boats and net. 【B1】______ they hope for a good catch of fish. But to their 【B2】______ ...
A.
As a result
B.
As it is
C.
As expected
D.
As usual
【简答题】I’m going to Tianjin early tomorrow morning.So I would like to request an early morning call.
【简答题】高速走丝电火花线切割机床的的数控系统大多采用()A. 步进电动机开环系统 B. 步进电动机闭环系统 C. 伺服电动机半闭环系统 D. 伺服电动机全闭环系统
【单选题】Most of the dead villagers were children because
A.
it was early morning of the school day
B.
the others except schoolchildren could leave the village
C.
children were asked to keep there for the sake of security
D.
children escaped more slowly than the others
【简答题】目前高速走丝电火花线切割机床的数控系统大多采用较简单的步进电动机开环系统，而低速走丝电火花线切割机床的数控系统则大多采用伺服电动机加码盘的（），仅在一些少量的超精密线切割机床上采用了伺服电动机加磁尺或光栅的（）。
【简答题】The early morning fire damaged the historic Gallad House today. It destroyed the third floor of the building so fire fighters saved the first and the second floors. There were only a few elderly peopl...
【单选题】Imagine fishermen walking down to the seashore, ready to carry out their early morning routine of preparing their boats and net.【1】they hope for a good catch of fish. But to their【2】, a horrible sight...
A.
As a result
B.
As it is
C.
As expected
D.
As usual
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