问题
多项选择题
由信息装置、采集装置、信息转换装置及其电源、智能终端及管理软件等组成的离线式电子巡查系统产品（），应用最为广泛。
A、结构简单
B、维修方便
C、使用方便
D、容易施工
答案
参考答案：A, C, D
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由信息装置、采集装置、信息转换装置及其电源、智能终端及管理软件等组成的离线式电子巡查系统产品（），应用最为广泛。
A、结构简单
B、维修方便
C、使用方便
D、容易施工
参考答案：A, C, D
完形填空 阅读短文 ，从每小题所给的A、B、C 、D四个选项中先出可以填入空白处的最佳选项（共15空；每空1分，满分15分） Tom is four years old now. His father works in a middle school and 1 P. E. there. His mother works in a shop and his grandma looks after him 2 . The boy is clever and always 3 that he knows more than his little friends do. One morning Tom ' s father 4 earlier. His school was going to hold a sports meeting that day. Of course, he was going to be 5 than any other teacher in his school. About two hours later, Tom's grandma 6 sick. Her head hurt but she couldn't go to see a 7 by herself. She called her son, but 8 answered. So she asked the little boy to go to tell his father about it As soon as Tom went out, he 9 his friend Henry. And he asked him to go there with him. The boys wanted to watch the sports meeting; and they 10 went there happily. Then they got to school, there were a lot of people on the 11 and the boy ' s 400 metre relay race(接力赛) 12 . They stopped to watch it. And Tom 13 what his grandma told him to do. They were interested in the race. Henry asked, "Why is the front boy running so fast?" Tom didn ' t know about it. He 14 for a minute and said, "What a fool( 傻瓜) ! Don't you see the other boys with 15 in their hands are running after him?"
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