400-600-1123
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答案：
B
核心表达
已知：p和e成正比，e和i也成比例，求i=70时p的值。 设：p=K1*e, e=K2i (K1,K2为比例系数) 代入可得：p=(K1K2)*i，设K1K2=K，则有p=Ki Statement (1) Alone 可以求出K2，K1未知，无法确定p和i之间的比例系数K，也就无法根据一个i的值确定p的值，所以不充分 Statement (2) Alone 可以直接求出K值，确定p=0.04i，将i=70代入求出唯一p=2.8，所以条件二充分
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