社会发展需要计量具有()
A.准确性
B.一致性
C.法制性
D.有效性
E.溯源性
参考答案:C
The scientists are expected to ______ some new suggestions on treating A(H1N1) flu spread all over the world after reading all the materials.
A.keep up with
B.put up with
C.look up to
D.come up with
混合痔是指
A.两个以上内痔
B.两个以上外痔
C.内外痔同时存在
D.内痔多发,形成环状痔
E.直肠上下静脉丛彼此相通形成的痔