硫酸盐检查法
A.稀硝酸B.稀盐酸C.硝酸D.盐酸E.醋酸盐缓冲液
参考答案:B
How long do you suppose ______ we applied for the job ________ we had been trained .
A.has it been since ; for which
B.is it before ; in which
C.it is when ; that
D.it is since ; for which
巴豆
A.煨熟用以止泻B.醋炙止痛力增强C.制霜以减毒性D.醋制可减低毒性E.炒炭以止血