How do you feel? [ ]
A. Clap your hands.
B. I feel happy.
C. It is my head.
答案:B
清热解毒、化痰止咳宜选用
A.生甘草
B.醋炙甘草
C.蜜炙甘草
D.姜炙甘草
E.甘草炭
23℃时玻璃幕墙用结构胶标准条件拉伸时,其最大拉伸强度时伸长率应()。
A.≤150%
B.≤100%
C.≤75%
D.≤50%