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【简答题】
导线接头要求应接触紧密和()等。
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反馈参考答案：
举一反三
【单选题】Grease coatings on electrical contact surfaces increase contact resistance and should be removed with a/an _____.
A.
small wire brush
B.
compressed air jet
C.
clean dry cloth
D.
10% solution carbon solvent and water
【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
【简答题】为什么说宋代是中国家具发展史上的重要时期?
【简答题】A: ABC Co. Ltd. Good morning. Can I help you? B: Good morning. It's Robert here of Electro Co. Ltd. I'd like to speak to whoever is in ____________ of your sales department.
【简答题】The suppliers of Quality Coatings Company are all the __________ manufacturers of coatings in the country.
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