构成骨骼和牙齿的常量元素中,除钙外还有( )。
A.氯 B.磷 C.钾 D.钠
参考答案:B
解析: 构成骨骼和牙齿的常量元素 磷和钙一样都是构成骨骼和牙齿的成分。
He never praises his wife: he just________ her________. [ ]
A. took; for granted
B. took; as granted
C. takes ; for granted
D. takes ; as granted
指出热敏性固体药物适宜的灭菌方法
A.环氧乙烷灭菌法
B.流通蒸汽灭菌法
C.热压灭菌法
D.滤过除菌法
E.干热灭菌法