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【简答题】
现需用一个按钮控制一盏指示灯(24VDC),要求按在PLC的DIa组的 ".3"上,指示灯接在DQa组的".5"上,试完成IO分配表、硬件电路图和程序。上传图片的形式上交。
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举一反三
【简答题】We need enough food to ( ) our strength.
【单选题】We need enough food to ___________ our strength.
A.
worsened
B.
sporadically
C.
maintain
D.
buffet
E.
servings
【单选题】I warned him of the slippery road, but he fell on fours ________ I finished my words. [ ]
A.
as
B.
before
C.
until
D.
since
【单选题】is used to prevent the car from skidding on a wet and slippery road.
A.
ESC
B.
ABS
C.
EBA
D.
EBD
【单选题】He _______________ when he rode his motorbike on the slippery road.
A.
took a risk
B.
take part in
C.
took a break
【单选题】We need enough food to ___________ our strength.
A.
underestimate
B.
grab
C.
maintain
D.
underestimate
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