A.Because he is sure that he can get up for the class. B.Because he has confidence in his economic knowledge. C.Because he dropped that class two weeks ago. D.Because he didn't sign up for that class at the beginning.
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
皮皮学刷刷变学霸
举一反三
【单选题】对于某理想溶液的平衡蒸馏,若维持进料量F、物料温度 、闪蒸室压强 p 不变,而将物料浓度 增加,则气相馏出物量D ______ 。