植物体内形成萜类成分的真正前体是由乙酸经甲戊二羟酸而生成的，它是
A. 三磷腺苷
B. 焦磷酸香叶酯
C. 焦磷酸异戊烯酯
D. 焦磷酸金合欢酯
E. 磷酸异戊烯酯
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银量法测定溴化物，碘化物采用吸附指示剂须
A. 始终应促使沉淀凝聚以减少吸附
B. 使银盐沉淀适度分散造成吸附的条件
C. 吸附指示剂在严格，熟练的测定中，避免有小的正误差
D. 具有负误差
E. B+C
The computer DIDN'T help the police ()
A. to find the suspect
B. to find the murdered couple
C. to arrest the suspect
D. to search a 1950 or 1951 Chevrolet
关于风险管理的描述不正确的是（）。
A. 风险管理(Risk management)包括风险识别、风险分析、风险评估和风险控制等内容
B. 从风险管理的角度去看，计算机可能是绝对安全
C. 可以通过建立基金来预防风险
D. 风险转移是一种损失控制对策
Which of the following statements is NOT true according to the passage()
A. Searching through the files of Chevies owners was impossibly difficult.
B. The suspect lived within a fifteen-mile radius of the suburb.
C. The suspect had received a number of traffic tickets before.
D. It took the police hours to find the suspect.
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