测定水中易释放氰化物时,加热蒸馏在pH为()的介质中、硝酸锌存在下进行。
A.2
B.4
C.7
D.12
参考答案:B
高血压伴有溃疡病患者,下列哪种药物应忌用
A.可乐定
B.哌唑嗪
C.卡托普利
D.甲基多巴
E.利血平
()can be considered as part of risk mitigation.
A.Risk identification
B.Purchasing insurance
C.Assessment of outcomes
D.Assessment of probabilities