The new career structure is different from the existing one in its _________ . [ A] quality of nurses' services [ B ] possibility of a job transfer [ C ] opportunities for promotion [ D] simplicity of nurses' grades
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【简答题】在相图中是否可利用杠杆规则来计算两相平衡区时两相的相对量?杠杆规则只适用于 T - x 图的两相平衡区吗?