冬季生产与夏季生产在顶温度控制上要()。
A.低
B.高
C.不变
参考答案:A
There will be ______ tomorrow than today. [ ]
A. much more rainy
B. much rainier
C. much more rain
D. much rain
急性心肌梗死伴频发室性期前收缩呈二联律,应首选治疗的药物是()
A.普罗帕酮
B.美托洛尔
C.胺碘酮
D.利多卡因
E.奎尼丁