下列实验操作中正确的是 A.给试管内的液体加热时试管口不能对着人 b.�试管里滴加液体药品时胶头滴管应伸入试管内 C.用托盘天平称量时 Template




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tomski下列实验操作中正确的是 a.给试管内的液体加热时试管口不能对着人 b.�试管里滴加液体药品时胶头滴管应伸入试管内 coloring