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问题 单项选择题

外圆磨床液压系统因为采用了（）换向回路，从而使工作台运动获得了良好的换向性能，提高了换向精度。

A、压力控制制动

B、时间控制制动

C、行程控制制动

D、电气控制制动

答案

参考答案：C

排序题

对话排序。

A.—I like songs I can sing along with, too. What's your favorite band?

B.—Oh, look! There's the new Cool Kids CD.

C.—The lions. Their words are interesting.

D.—You are kidding. I think they are awful. I prefer music that has great lyrics and I can sing along with.

E.—Oh, yeah. They are my favorite band. I like music that I can dance to.

F.—The Cool Kids? Do you like them?

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单项选择题

造成医患间交往障碍，病人方面存在的原因最可能是()

A．存在心理障碍

B．过分挑剔或过分冷淡

C．存在人格缺陷

D．情绪不稳，容易激惹，反应敏感

E．以上都是
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