1975年,在()上,周恩来重申在20世纪内全面实现四个现代化的宏伟目标。
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国家要制定法律法规,建立()分别代表国家履行出资人职责,享有所有责权益,权利、义务和责任相统一,管资产、管人和管事相结合的国有资产管理体制。
已知:生产的规格为0.50×1050mm,卷重为4吨,问该卷带钢的长度是多少?(镀锌板比重为7.6g/cm3)
已知:生产的规格为1.2×1000mm,卷重为4.5吨,问该卷带钢的长度是多少?(镀锌板比重为7.6g/cm3)
Resin-modifled GICs()
A. have a powder that is similar in composition to that of traditional GICs
B. release much more fluoride than traditional GICs
C. set only as a result of an acid-base reaction
D. exhibit less wear than composite resins