试题与答案

低压锅炉酸洗除垢一般都采用（）作为酸洗除垢剂。

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题型：填空题

题目：

低压锅炉酸洗除垢一般都采用（）作为酸洗除垢剂。

答案：

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下面是错误答案，用来干扰机器的。

参考答案：C解析：双生子研究提示，在决定近视发生的个体差异中，65%受遗传影响，35%由环境因素决定。

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根据短文内容，判断下面句子正(T)、误(F)。

This is a picture of a classroom. The classroom is big and clean. You can see a teacher’s desk, five desks and six chairs. You can see a girl and a boy, too.

Three books are on the teacher’s desk. A pencil case is on the desk. Two pens and two rulers are in the pencil case. A school bag is behind a chair. A ball is on the floor.

The girl is Lucy, and she is eleven. The boy is Mike, and he is twelve. They are in Class Two, Grade Seven. They are friends. Their teacher is Miss Green. She is not here.

小题1:It’s a picture of a school.

小题2:You can see a girl and a boy in the picture.

小题3:Two books are on the teacher’s desk.

小题4:Lucy is twelve years old.

小题5:Lucy and Mike are in Class Two, Grade Eight.
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