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问题
填空题
半闭环进给伺服系统的检测元件是()。
答案
参考答案:角位移检测器
选择题
In recent years many football clubs _____ as business to make a profit.
A. have run
B. have been run
C. had been run
D. will run
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单项选择题
肺结核重症患者作标准化疗的疗程为
A.6~12个月
B.24~36个月
C.3~6个月
D.12~18个月
E.18~24个月
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