具有一定专业水平和能力的专家担任仲裁员，对当事人之间的纠纷进行裁决是仲裁( )的重要保障。
A．公正性B．专业性C．程序性D．强制性
参考答案：A
Don’t just believe the advertisement. That kind of camera is _____ it says. [ ]
A. as good as
B. not as good as
C. as well as
D. not as well as
催化剂添加量偏低的处理方法是（）。
A、提高缩聚系统真空
B、提高酯化系统温度
C、提高酯化系统压力
D、提高熔体出料量
