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【单选题】
以下说法错误的是：（ ）
A.
输入继电器必须由外部信号驱动；
B.
每个输入继电器的线圈在只能出现一次；
C.
输入继电器的触点使用次数不限；
D.
输入继电器是PLC接受外部输入设备输入信号的窗口。
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擦干羊水
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【单选题】某产妇,30岁,孕38周,因临产由急诊收入产房,护士为其做产前检查:宫口开大10cm,胎心140次/分。胎儿娩出后,护士首先进行的护理措施是
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【单选题】When the narrator is beaten by his mother, how does the poet comfort him?
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【单选题】某产妇30岁,孕38周,因临产由急诊收入产房。护士为其做产前检查:宫口开大10m,脸心140次/min胎儿娩出后护士首先进行的护理措灌是
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【单选题】How does the poet speaker feel in the last two lines “For love of Her – Sweet – countrymen –/Judge tenderly – of Me”?
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