必须实施的进出口商品检验,是指确定列入目录的进出口商品是否符合国家技术规范要求的合格评定活动。()
参考答案:对
He said he would arrive before seven, and _____. [ ]
A. he did
B. did he
C. he had
D. had he
肥厚型心肌病患者可选用的药物是()
A.β-受体拮抗剂
B.洋地黄
C.血管紧张素转换酶抑制剂
D.硝普钠
E.钙通道阻滞剂