霍尔无触点分电器由（）A、电路、触发器、永久磁铁组成 B、霍尔

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问题单项选择题

霍尔无触点分电器由（）

A、电路、触发器、永久磁铁组成

B、霍尔集成电路、触发器、电磁铁组成

C、霍尔集成电路、触发器、永久磁铁组成

D、集成电路、触发器、电磁铁组成

答案

参考答案：C

填空题

用所给单词的适当形式填空。

1. The doctor said _______( taste) food is bad for students' health.

2. Laura told me that she _______(main) eats fruit and vegetables.

3. Most people are in_______(agree) that fruit and vegetables are good for health.

4. Eating _______( burn) barbecued meat often might cause cancer.

5. People who eat a _______ ( balance) diet should be healthier than those who only eat meat.

单项选择题 A1型题

钩端螺旋体显凝试验的阳性值是（）

A.1：100

B.1：200

C.1：300

D.1：400

E.1：800