乳油在硬水中使用效果更好。
参考答案:错
Physics is too _____ for me. I don't like it at all. [ ]
A.interesting
B.easy
C.difficult
D.wonderful
饬食泻的临床特点为()。
A.大便稀烂
B.大便有泡
C.大便色黄
D.大便清稀
E.大便有乳片