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问题 单项选择题

判断外供二甲苯进料中的甲苯含量是否正常的依据是（）。

A、反应器出口物料中的甲苯含量高

B、脱庚烷塔底物料中的甲苯含量高

C、吸附进料中的二甲苯含量高

D、对进出二甲苯塔中的物料进行甲苯恒算

答案

参考答案：D

单项选择题

Which of the following groups is defined as "newlyweds" a. Couples who are married for less than two years. b. Couples who are married for less than five years. c. Couples who are married for more than five years. d. Couples who are married for more than twenty years.
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判断题

挂失止付是票据丧失后票据权利补救的必经程序，失票人只有对丧失的票据办理挂失止付后，方可向人民法院中请公示催告( )
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