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问题 单项选择题

( )是重大危险源控制的主要内容。

A．安全措施评价

B．安全技术评价

C．风险评价

D．风险管理评价

答案

参考答案：C

解析： 事故树分析、危险指数法都属于风险评价，风险评价是重大危险源控制的主要内容。

单项选择题

阿莫西林与下列哪项叙述不符

A．分子中含有四个手性碳原子，分子的旋光性为右旋
B．水溶液不够稳定，可分解及聚合，故注射液应在使用前配制
C．具有三个pKa值
D．聚合速度比氨苄西林快4．2倍
E．为第一个临床使用的广谱青霉素
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单项选择题

Questions from 31 to 35 are based on the following passage: Against this background, the WTO faces several daunting challenges. The first is to continue bringing down tariffs on traded goods. Average penalties have fallen steadily since the GATT’s formation but even the most open economies retain lofty barriers: for instance, America still charges a tariff of 14.6% on import of clothing, five times higher than its average levy.Resistance to tariff cuts is pest in agriculture. According to Tim Josling, a trade expert at Stanford University, tariffs and other barriers on farm goods average a crippling 40% worldwide and create distortions that “destroy huge amounts of value”. A new set of global farm talks is planned to start in 1999. At the least, you might think, these could lock in impressive reforms in Latin America and encourage further watering-down of the European Union’s Common Agricultural Policy. But they will prove difficult: squabbles over agriculture almost sank the Uruguay round.

What does the WTO face（）

A．fair trade rules

B．free trade

C．export tax reduction

D．several challenges
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