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【单选题】
These are ____________coatings, but may approach the performance of thermosetting coatings by the incorporation of amino resins (氨基树脂).
A.
polymer
B.
thermoplastic
C.
superconductor
D.
thermonuclear
举报
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三