题目

When will the speakers probably leave for the train station?A. At 3:30 p.m. B. At 4:00 p.m. C. At 4:30 p.m. 答案：【答案】A【解析】此题为听力题，解析略。此题为听力题，解析略。农作物生长需要含较多氮、磷、钾元素的化肥，下列化肥属于含磷复合肥料的是A. NH4NO3 B. Ca(H2PO4)2 C. (NH4)2HPO4 D. KNO3