片剂重量差异限度
30g以下片剂
A．4±3.0% B．±5.0% C．±7.5% D．±1O%
参考答案：C
--My parents and I will go to London for a trip tomorrow. --Really? __________.
A．I don't think so
B．Have a good time
C．That's very strange
D．You should try it
滑车组“五五走十”是什么意思？
