乳糖在片剂中常用作
A.崩解剂
B.润滑剂
C.润湿剂
D.黏合剂
E.填充剂
参考答案:E
解析:乳糖是常用的片剂填充剂。
两个电热丝R1、R2,其电阻关系为R1∶R2=2∶3,若将它们串联在电路中,它们两端的电压之比U1∶U2=_________,在相同的时间里,产生的热量之比Q1∶Q2=_________;若将它们并联在电路里,通过它们的电流之比I1∶I2=_________.
Those successful deaf dancers think that dancing is an activity _____ sight matters more than hearing. [ ]
A. when
B. whose
C. which
D. where