多选题通常MMC（metal matrix composite）（）A采用高熔点、重金属作为基体。B要比基体金属或合金的塑性与韧性差。C要比基体金属或合金的工作温度高。D要比基体金属或合金的弹性模量低。
多选题
通常MMC（metal matrix composite）（）
A
采用高熔点、重金属作为基体。
B
要比基体金属或合金的塑性与韧性差。
C
要比基体金属或合金的工作温度高。
D
要比基体金属或合金的弹性模量低。
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