国家基本药物的品种数约占现有品种的()
A.10%~15%
B.20%~25%
C.30%~35%
D.40%~55%
E.50%~65%
参考答案:D
—Will $200 __________ the cost of the damage?
—I’m afraid not.I need at least 100 more dollars.
A.resemble
B.include
C.cover
D.afford
处理过热器内的积盐常用()的方法。
A.酸洗
B.蒸汽洗
C.刮除
D.水冲洗