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【单选题】
PLC在自动开关门控制系统。控制要求:当有人靠近自动门时,感应器接通(I0.0=1)执行开门程序(Q0.0控制开门动作,当碰到开门限位开关(I0.1=1)后停止。停2秒后(定时器T37计时)仍没有检测到有人(感应器没有接通),执行关门程序(Q0.1控制关门动作)。当关门限位开关接通(I0.2=1)停止时,回到初始状态。关于顺序功能图中转换条件或动作说法正确的是 。A.
①是SM0.0
B.
③是I0.0
C.
③是I0.1
D.
以上都不对
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【单选题】He _____ his first wife soon after his graduation from university but _____ a month later. [ ]
A.
married with; divorced
B.
married to; got divorced
C.
was married; divorced with
D.
married; divorced
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A.
married with; separated
B.
married to; got separated
C.
was married; separated with
D.
married; separated from
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【单选题】You can ______ the notes of the book in regard to this question.
A.
refer to
B.
prefer to
C.
transfer to
D.
offer
【单选题】It can be inferred from the passage that______.
A.
Harold Strauss and his wife both earns a good living.
B.
Raymond Carver earns his living by writing short stories.
C.
The money devoted by Harold Strauss and his wife would quickly drain out.
D.
Diane Johnson and Robert Stone are not professional editors like Harold Strauss.
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【单选题】It can be concluded from the passage that______.
A.
the man loved his wife passionately
B.
the woman loved the man deeply
C.
the man dearly loved the woman
D.
the woman hated the man's wife
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