【判断题】【消耗次数：1】
步进控制中，随着状态动作的转移，原来的状态自动复位。（）
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【单选题】
下列属于顺序控制特点的是（）。（1）每个工步（或状态）都应分配一个状态控制元件，确保顺序控制能按控制要求顺序进行。（2）每个工步（或状态）都具有驱动负载的能力，能使该工步的输出执行元件动作。（3）每个工步（或状态）在转移条件满足时，都会转移到下一个工步，而上一工步自动复位。
①
（1）（2）
②
（2）（3）
③
（1）（2）（3）
【单选题】
根据JK触发器的状态转移图，Qn=0转换到Qn+1=1, J和K端正确而又完整的控制状态是 。
①
J=1 K=d
②
J=0 K=d
③
J=d K=1
④
J=d K=0
随机题目
【单选题】
2. Whenever I called in on Paul, he _______ on the phone.
①
talked
②
is talking
③
was talking
④
will talk
【单选题】
3. He ______ hard until I told him to sit down and have a break.
①
was working
②
had been working
③
worked
④
has worked
【单选题】
19. He tried to _____ from his memory what he knew of his former neighbor..
①
think of
②
remember
③
summon
④
gave way
【单选题】
14. Mary is _______ to what others think of her.
①
sensitive
②
sensational
③
sensory
④
sensible
【单选题】
11 ______, they had no chance of winning.
①
brave as they fought
②
bravely as they fought
③
If they fought bravely
④
Since they fought bravely
【单选题】
15. She suffered great mental_____ after her husband died, and as a result she became mad.
①
anger
②
. discomfort
③
unhappiness
④
anguish
【单选题】
13. The supervisor appreciates ______ so hard in the office.
①
for your working
②
your working
③
you to work
④
for you to work
【单选题】
10. ______, he was unable to make much progress.
①
Hard as he tried
②
Though hard as he tried
③
He tried hard
④
Because he tried hard