题目内容：
第一个被发现的环境致癌物是()(本题2.0分)A. 多环芳烃
B. 苯并芘
C. 多氯联苯
D. 氡气
E. 氯乙烯
参考答案：
选择题：第一个被发现的环境致癌物是()(本题2.0分)A. 多环芳烃B. 苯并芘C. 多氯联苯D. 氡气E.
- 题目分类：平顶山学院-环境生态工程-环境工程(专升本)
- 题目类型：选择题
- 查看权限：VIP
A. 多环芳烃
B. 苯并芘
C. 多氯联苯
D. 氡气
E. 氯乙烯
A. 多环芳烃
B. 苯并芘
C. 多氯联苯
D. 氡气
E. 氯乙烯
He is very clever and his ability to improve his w
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You remember things every day, but how do you do i
You remember things every day, but how do you do it? You find a number in the ph
For a whole month she stayed in the hospital and n
For a whole month she stayed in the hospital and not once did she visit her home
在曲柄摇杆机构中，只有当（）为主动件时，才会出现“死点”位置。 (本题2.0分)A. 连杆B. 机架
在曲柄摇杆机构中，只有当（）为主动件时，才会出现“死点”位置。 (本题2.0分)A. 连杆B. 机架 C. 摇杆D. 曲柄
By the end of 2020, China ______ much stronger and
By the end of 2020, China ______ much stronger and richer.A will becomeB would b