线圈的同名端指线圈（） ["中绕向一致的端头，即所感生的电动势的极性是始终相同","号码相同的端子","外形结构和紧固件相同的端子","要两个或两个以上完全相同时，其端子才能冠以同名端"]
一个完整的角色知觉过程应该包括（） ["角色理解","角色认知","角色行为","角色期望","角色评价"]
After making the required notification that a large oil spill into the water has occurred，the FIRST action should be to（）. ["apply straw or sawdust on the oil","contain the spread of the oil","throw grains of sand into the oil","have the vessel move out of the spill area"]
According to the Chemical Data Guide，which reactive group(s) is/are not compatible with the products polybutene and o-xylene? （） ["Nitric acid","Amides","Alcohols，glycols","Phenols，cresol"]
中南半岛的地形和气候有哪些特征？它们是怎样形成的？
怎样计算客户毛利率？
