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【单选题】
Why does Susan usually stay with her grandmother during holidays?A.
Because her parents are very strict with her.
B.
Because she wants to take care of her grandmother.
C.
Because her parents are too busy to take care of her.
D.
Because she likes staying in her grandmother's village.
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【单选题】M y mother’s job is __________ sick people in the hospital.
A.
look after
B.
looking after
C.
to look after
D.
looked after
【单选题】断开延时定时器 TOF 的使能输入电路接通时,定时器位立即变为 ON ,当前值被 清零 。使能输入电路________从 0 开始 增大 。当前值等于预设值时,输出位变为 OFF , 梯形图中其常开触点 断开 , 常闭触点 接通 , 当前值 保持不变 。
A.
接通
B.
断开
C.
先接通再断开
D.
先断开再接通
【简答题】断开延时定时器TOF 的使能输入电路接通时,定时器位立即变为_____,当前值被清零。使能输入电路断开时, 当前值从0 开始增加。当前值等于预设值时,输出位变为_____,梯形图中其常开触点_____,常闭触点_____,当前值保持不变。
【简答题】关断延时定时器 TOF 的使能输入电路接通时,定时器输出端 Q 为( )状态,当前值被( )。使能输入电路断开时,当前值从 0 开始( )。当前值大于等于预设值时,定时器输出端 Q 变为( )。
【单选题】听力原文：W: Mother's Day is coming, what will you send to your mom? M: I've no idea. What about you? W: My mom is on a business travel; I guess she can't be back on that day. M: I heard there would be a s...
A.
The woman's birthday.
B.
His mother's job.
C.
The woman's name.
D.
The woman's present for her mother.
【简答题】断开延时定时器TOF的使能输入电路接通时,定时器位立即变为(ON/OFF)______,当前值变为_______,使能输入电路断开时,当前值从0开始(增大/减小)_______。当前值等于预设值时,定时器变为(ON/OFF)_______,梯形图中其常开触点_____,常闭触点______,当前值(增大/减小/保持不变)_______。
【单选题】The idea of Mother's Day was first raised in America by ______.
A.
the Greeks
B.
Anna Jarvis
C.
Julia Ward Howe
D.
President Wilson
【简答题】[填空题]断开延时定时器TOF的使能输入电路接通时,定时器位立即变为 __________ ,当前值被__________ 。使能输入电路断开时,当前值从0开始__________ 递增。当前值等于预设值时,输出位变为__________ ,梯形图中其常开触点__________ ,常闭触点__________ ,当前值__________。
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