题型:名词解释 The volunteers started looking after other children()parents died of AIDS last yearA.whoseB.thatC.whichD.who 查看答案
题型:名词解释 根据NACERP01-88,漏涂点测试仪的探头应该以下列哪一种速度在涂料表面上移动()A.1英寸(2.54厘米)/秒B.6英寸(15厘米)/秒C.9英寸(22.5厘米)/秒D.12英寸(30厘米)/秒 查看答案