在啤酒生产中,硅藻土是作为()使用,它对啤酒风味基本没有影响。
A.助滤剂
B.添加剂
C.粘合剂
D.抗氧化剂
参考答案:A
If you had helped him, he _________happy now. [ ]
A.is
B. would have been
C. Was
D. would be
急性前间壁心肌梗死时出现坏死图形的导联是()
A.Ⅱ、Ⅲ、aVF
B.Ⅰ、aVF
C.V1、V2、V2
D.V4、V5、V6
E.Ⅰ、aVL、V5、V6