药物的摩尔吸收系数大是因为
A.该药物对一定波长光的吸收强
B.该药物溶液的浓度高
C.该药物的透光率高
D.该药物溶液的光程长
E.该药物分子的吸收光子概率低
参考答案:A
不等式1+2x≤5的正整数解是______.
— Excuse me, can you tell me the way to the bank?
— My English is poor, I can’t follow you.
A. Thank you. B. I’ m sorry to hear that. C. I beg your pardon?