题型:问答题 实验室现要量取15mL的盐酸,量液时量筒必须平放,视线要与______;若某同学量取液体时俯视量筒内液体凹液面的最低处读出读数为15mL,则所取液体的实际体积应______15mL(填“<”、“>”或“=”). 查看答案
题型:选择题 ---Why was Mr. Li so happy this morning?---Because he was with an award for excellence in teaching.A.givenB.admiredC.honouredD.rewarded 查看答案