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【单选题】
关于置位复位指令，下面哪项叙述是正确的：A.
S/R指令的操作范围中不包含定时器计数器
B.
对位元件来说，一旦被置位，就保持在通电状态，除非对它复位；对位元件来说，一旦被复位，就保持在断电状态，除非对它置位
C.
S/R指令可以互换次序使用，但写在前面的指令具有优先权
D.
S/R指令的操作范围中不包含特殊继电器SM
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皮皮学刷刷变学霸
举一反三
【简答题】Section B Dialogue Listening
【简答题】How much discount can returning students qualify for?
【单选题】How much discount can Bella get?
A.
8% discount
B.
12% discount
C.
10% discount
D.
5%discount
【简答题】Section B Listening Practice Task One Listen to the two news reports and choose the best answer to each of the following questions News One Questions 1 and 2 will be based on the following news item.
【简答题】Section B Listening Practice Directions: Listen to the audio clip and fill in the blanks. When I was a senior in high school, colleges called out my name. Every day I’d 1) _________ where to matricula...
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