《中国药典》(2000年版)规定制备标准缓冲液与供试品溶液的水应是新沸过的冷蒸馏水,其pH值是
A.RB.TC.F、D.d(hkl)E.θ
参考答案:D
I often think of the days ______ I took part in the military training with the soldiers, _____ has a great effect on my studies.
A.which; that
B.that; which
C.when; who
D.when; which