考博考试

根据网考网考试中心的统计分析，以下试题在2017/11/19日考博习题练习中，答错率较高，为：94%
【单选题】Most insulation devices of this kind, ______ manufactured for such purposes, are extremely expensive to install.
A．that are
B．which is
C．those are
D．as are
网考网参考答案：D，答错率：94%
网考网试题解析：
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