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【单选题】
基准试剂常用于直接配置和标定标准溶液，下列关于基准试剂五项要求说法错误的是A.
纯度（质量分数）应≥99.9%
B.
组成与化学式可有细微差别，其结晶水的含量均应符合化学式
C.
性质稳定，一般情况下不易失水、吸水或变质，不与空气中的氧气及二氧化碳反应
D.
参加反应时，应按反应式定量进行，没有副反应
E.
要有较大的摩尔质量，以减小称量时的相对误差
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举一反三
【单选题】Companies that take a proactive stance toward the marketing environment are most likely to ________.
A.
develop strategies to change the environment in their favor
B.
passively accept the marketing environment
C.
resist organizational change
D.
discourage innovation
【简答题】看得到,在视力范围之内
【单选题】Companies that take measures to reduce waste and pollution______.
A.
are more productive
B.
are less successful
C.
save money
D.
spend more money
【单选题】Companies that take the more advanced step of localization provide a local version of their Website that not only accommodates the language of a specific region, but also its standards and culture.
A.
to provide with a place to live
B.
to change yourself or your behavior to suit another person or new conditions
C.
has enough room for
D.
to win a victory over
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