“医疗机构制剂许可证”是医疗机构配制制剂的（）
A.能力的体现
B.资格证明
C.规模认可
D.等级划分
E.优劣评定
参考答案：B
煤气爆炸浓度必须在浓度下限和浓度上限之间才能爆炸。
Tom is very young. But ________ working ability, he's much more experienced than others.[ ]
A. in praise of
B. in face of
C. in need of
D. in terms of
face of