题型:填空题 Every father should realize the important part _______ in his child’s education.A.which he hasB.that he playsC.which he makesD.that he owns 查看答案
题型:填空题 根据《地面水环境质量标准》(GB3838—88)将地面水体划分为()类,将生活饮用水水源按水质划分为()级。经净水厂净化处理后的生活饮用水水质应当达到()的要求。A.五类;三级;《生活饮用水水质标准》(GB5749) B.三类;五级;《生活饮用水质量标准》(GB5749) C.四类;二级;《生活饮用水水质标准》(GB5749) D.五类;二级;《生活饮用水卫生标准》(GB5749) 查看答案