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【简答题】
已知PLC的输入继电器0000接起动按、0001接复位停止按，输出继电器0500控制某加热器。要求按一次起动按，立即加热且维持2h后自动停止；按下复位停止按立即停止。请用定时器0和计数器1配合完成上述程序设计，画出梯形图。
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举一反三
【单选题】What should parents do when their children become victims of cyber bullying according to the passage?
A.
Remind them that cyber bullying is as dangerous as bullying.
B.
Try to make them feel comfortable enough to ignore it.
C.
Limit their access to the internet.
D.
Tell them that cyber bullying is not their fault.
【简答题】简述品牌命名的原则
【单选题】What is the major problem in defending against cyber threats?
A.
There is a shortage of professionals.
B.
There is currently no effective software.
C.
The current software was produced 20 years ago.
D.
Laws for cyber security are needed.
【多选题】下列对保健食品命名描述不正确的有( )
A.
一个产品只能有一个名称，一般由品牌名、通用名、属性名组成，也可直接使用通用名和属性名命名
B.
品牌名一般使用文字型商标。品牌名使用注册商标的，在品牌名后加“牌”或在品牌名后右上角加“ ”；使用非注册商标的，在品牌名后加“牌”
C.
可以使用已经批准注册的药品名称，与已经批准注册的药品名称音、形相似的名称
D.
以产品所用原料命名的，应使用规范的原料名称，原料较多的可以用配方中的部分原料命名或简写命名
【简答题】What is cyber bullying?Cyber bullying is when a child or a ager is threatened or otherwise targeted by another child or ager using the Internet or mobile phones. In cyber bullying there is no ...
【简答题】What is cyber bullying?Cyber bullying is when a child or a ager is threatened or otherwise targeted by another child or ager using the Internet or mobile phones. In cyber bullying there is no ...
【简答题】简述品牌命名的六项原则。
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