将强度不同的HClO4与HCl溶于水中,则都被均化为H3+ O的强度水平,称为
A.金属指示剂B.吸附指示剂C.酸碱指示剂D.自身指示终点法E.永停指示终点法
参考答案:A
—Tonight’s negotiation _____ to be a difficult one.
—I can’t agree more. Both sides are stubborn and will fight for their own benefits.
A.intends
B.sounds
C.promises
D.prepares