K-Ar法
1.采样对象,a全岩样品b单矿物样品 2.采样要求:a显晶质的单矿物b复杂历史的变质岩 3.适用性:中性岩,浅变质岩
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
废弃化学品的销毁方法有爆炸法、燃烧销毁法、水溶解法、化学分解法。( )
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