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【单选题】
S7-200系列PLC硬件接口为RS-485通信接口,为( )通信方式。A.
半
B.
C.
D.
均可以
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举一反三
【简答题】听下面一段材料，回答第1至3题。 1. Why is the woman in the library? A. To have a meeting. B. To attend classes. C. To prepare for a test. 2. How many units will be included in the test? A. 3. B. 4. C. 6. 3. What is ...
【简答题】计算机技术应用广泛,以下属于科学计算方法是( )A. 视频信息处理 B. 信息检索 C. 火箭轨道计算 D. D 、 图像信息处理
【简答题】听下面一段材料，回答第1至4题。 1. Why is the woman looking unhappy? [ ] A. Because she feels bored. B. Because she loses her job. C. Because she can't watch TV. 2. What does the woman think of her job? [ ] ...
【单选题】Why is the woman trying to find a new job?
A.
She is thirsty for promotion.
B.
She wants a much higher salary.
C.
She is tired of her present work.
D.
She wants to save travel expenses.
【单选题】Why is the woman interviewing the man?
A.
To seek his advice.
B.
To prepare for a job.
C.
To organize a debate.
D.
To finish her homework.
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