Whose gloves are they?[ ]
A. It's her.
B. They're hers.
C. It's hers.
答案：B
消除有机碱的氢卤酸盐的干扰( )。
A．拉平效应B．区分效应C．非水酸量法D．非水碱量法E．须加醋酸汞
