我国小儿传染病的计划免疫有 A．结核菌灭活菌液 B．麻疹减毒活

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问题多项选择题

我国小儿传染病的计划免疫有

A．结核菌灭活菌液

B．麻疹减毒活疫苗

C．百日咳菌液、白喉类毒素、破伤风类毒素

D．脊髓灰质炎灭毒死疫苗

E．以上都是

答案

参考答案：B,C

填空题

请用括号中所给词的正确形式填空。

1. Marvin, you were walking _______(slow). Please walk more _______(quick).

2. Susie, you were reading a letter _______ (serious). Please read it _______ (sad).

3. Mary, you were setting the table too _______ (noisy). Please do it _______ (quiet).

4. Mike, you were bringing in the food _______ (casual). Please do it _______ (formal).

5. Am I speaking too _______ (fast)?

6. The weather was _______ (terrible) bad.

单项选择题

为保证设备和系统的密闭性，在验收新设备时，在设备修理之后及在使用过程中，必须用( )检查其密闭性，测定其是否漏气并进行气体分析。

A．气压试验
B．水压试验
C．动力试验
D．气密试验