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【多选题】
下列( )属于PLC系统中的硬件组成A.
中央控制单元
B.
存储器
C.
输人输出单元
D.
编程器
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皮皮学刷刷变学霸
举一反三
【单选题】He told us that he would leave for Shanghai ( ).
A.
next day
B.
the next day
C.
the future day
【单选题】He told us ________ story that all of us were pleased to hear it.
A.
so interesting
B.
such interesting
C.
such an interesting
D.
so an interesting
【简答题】He told us his (excite) ______ experience.
【简答题】精密称定系指称取重量应准确至所取重量的（）；称定系指称取重量应准确至所取重量的（）。
【单选题】He told us that he ________ for two hours.
A.
hasbeen waiting for us
B.
had been waiting for us.
C.
is waiting for us
D.
waiting for us
【单选题】He told us that he was tired and thirsty because he ________ in the desert for days.
A.
walked
B.
has walked
C.
had walked
D.
would walk
【简答题】为便于管理，“应收账款”、“应付账款”的明细账必须采用多栏式明细分类账格式。
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