问题
选择题
——You seem to be an actor.
____ . I have played many parts in a lot of films.
A．So do I
B．So am I
C．So I do
D．So I am
答案
答案：D
搜题请搜索小程序“爱下问搜题”
——You seem to be an actor.
____ . I have played many parts in a lot of films.
A．So do I
B．So am I
C．So I do
D．So I am
答案：D
在氢氧化钾溶液中，已知钾离子与水分子的物质的量之比为a : b，溶液的密度为d g/cm3，则溶液的浓度为 ( )
|
A．
×100%
B．
%
C．
mol/L
D．
mol/L