单选题:What did he do to make her happy?( )

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题目内容:
What did he do to make her happy?( ) A.He studied much harde
B.He often took her for a rid
C.He always endured her insult
D.He often bought her presents and meal
参考答案:
答案解析:

在新建的异丙苯单元的物料平衡中,使用原料为苯174900t/a,丙烯95639t/a,催化剂和离子交换树腊共74.8t/

在新建的异丙苯单元的物料平衡中,使用原料为苯174900t/a,丙烯95639t/a,催化剂和离子交换树腊共74.8t/a,产出产品异丙苯265000t/a,副

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请给出该项目的卫生防护距离,对周围的两个村庄应采取什么措施?并指出卫生防护距离的计算需要哪些参数?

请给出该项目的卫生防护距离,对周围的两个村庄应采取什么措施?并指出卫生防护距离的计算需要哪些参数?

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