生活给水系统的给水压力一般为(),且不宜大于0.4MPa。 ["0.3~0.4MPa","0.3~0.35MPa","0.25~0.35MPa","0.25~0.4MPa"]
60℃等于()。 ["340.15K","335.15K","338.15K","33.15K"]
以下物质,哪些是食品防腐剂()。 ["A、对羟基苯甲酸酯;","B、山梨酸;","C、碳酸氢钠;","D、酒石酸。"]
直线命令“LINE”中的“C”选项表示()。 ["闭合CLOSE","继续CONTINUE","创建CREATE","粘连CLING"]
在内部评级法银行帐户信用风险暴露分类中,零售风险暴露分为哪三大类:()。 ["个人住房抵押贷款","合格循环零售风险暴露","其他零售风险暴露","项目融资"]
简述抽提的目的?