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【简答题】
掌握触摸屏的操作及初级编程方法,要求使用MCGS与PLC能够通信,通过触摸屏控制步进电机的运动,由触摸屏输入发给步进电机的脉冲数,触摸屏上显示按键及PLC所发出的脉冲数。
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举一反三
【单选题】It took Andy two hours ____ his homework yesterday evening and I spent ____ mine. [ ]
A.
doing; less time finishing
B.
doing; more time to finish
C.
to do; more time to finish
D.
to do; less time finishing
【简答题】简述《指南》提出的幼儿社会领域学习的指导要点
【单选题】- Sam, I called you yesterday evening, but no one answered. - Oh, sorry. I _______ a shower at that time. [ ]
A.
took
B.
am taking
C.
take
D.
was taking
【单选题】I hear the children have problems ______ the zoo. [ ]
A.
to get to
B.
to getting
C.
getting to
D.
getting at
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