治疗心力衰竭使用硝酸甘油的主要依据是（）。A.降低心输出量 B.

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问题单项选择题

治疗心力衰竭使用硝酸甘油的主要依据是（）。

A.降低心输出量

B.改善冠脉血流量

C.扩张动静脉，降低心脏前后负荷

D.降低心脏前负荷

E.降低心脏后负荷

答案

参考答案：C

填空题

请根据句意及英文释义选择填空。

1. — Mom, I'd like some hamburgers. I think they are very ____ (nice, good).

— OK, we'll have them for lunch.

2. — Please come in and have a ____ (seat, sit).

— Thank you.

3. — Dad, would you like to ____ (get, take) a new bike for me?

— Sure. What color would you like?

4. These are your oranges. Those are ____ (my oranges).

5. — What time do you often get up in the morning?

— At a ____ (fifteen minutes(分钟)) past six.

单项选择题

全站仪是一种可以进行（）测量，（）进行数据处理的仪器，由机械、光学、电子三种元件组成。

A.角度；能

B.距离；能

C.角度和距离；不能

D.角度和距离；能