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
