题目内容

阴道滴虫病首选

A. 甲硝唑
B. 氯喹
C. 制霉素
D. 伊维菌素

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在同一个饲养周期内，换用两种或两种以上不同性质的抗球虫药，属于（）

A. 轮换用药
B. 穿梭用药
C. 联合用药
D. 作用峰期

临床常用的抗梨形虫（焦虫）药

A. 三氮脒（贝尼尔）
B. 敌敌畏
C. 硝氯酚（拜耳）
D. 磺胺嘧啶

Fill in the blanks with the proper words or expressions given below, changing the form if necessary.breakawardprogramrecognitionteamA. It's hard for us to know how much effort they have put in this1. ________.B. The great progress they have made comes from their good 2. work.C. I'll phone you in my lunch 3. _.D. Clearly, he depends too much on others' 4._.E. The government offers 5. _________to volunteers who go to work in the western part of China.

D/A转换器一般由数码寄存器、模拟开关电路、解码网络、基准电压等四部分组成。

A. 对
B. 错