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【单选题】
控制系统的输入参考量是一个常值,我们称它为( )A.
恒值控制系统
B.
随动系统
C.
程序控制系统
D.
无
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反馈参考答案：
举一反三
【简答题】商业企业物流包括()。 [A]企业采购物流 [B]企业内部物流 [C]企业销售物流 [D]企业退货物流
【单选题】She has been working hard day and night during these years ________ she could pay for the lost necklace.
A.
in order that
B.
as long as
C.
the moment
D.
because
【简答题】我国现有的物流企业大致有三类，即______物流企业、______物流企业、______物流企业。
【简答题】以下( )是企业生产活动的中心环节。 A企业生产物流 B企业采购物流 C企业销售物流 D企业退货物流
【单选题】A．She thinks the wearier is pleasant.B．She has been working hard in the lab.###SX
A.
She thinks the wearier is pleasant.
B.
She has been working hard in the lab.
C.
She is not feeling very well today.
D.
She has been staying up quite late recently.
参考解析：
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