陶瓷锦砖铺贴，接缝宽度调整应在水泥浆______操作。
A．初凝前
B．初凝后
C．终凝前
D．终凝后
参考答案：A
Hurry up. There's time left. [ ]
A. a little
B. little
C. a few
D. few
终止心绞痛发作应选用
A．地高辛B．卡托普利C．美托洛尔D．硝苯地平E．硝酸甘油
