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名词解释：人际关系的结构

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沥青面层的检测项目：原材料送检、 __ 、 _、、___、弯沉、抗滑性能.

名词解释：冷淡

The Salk vaccine is a major factor in the fight to eradicate polio.（）

A. completely destroy
B. carefully disguise
C. sustain
D. contain

Although the Carbon 14 method of dating old objects is not foolproof , it is the best method available at present（）

A. wholly operational
B. entirely serviceable
C. fully reliable
D. completely safe