题目: 测定()的水样常用硝酸酸化至pH值为1~2。A、氰化物B、金属离子C、挥发酚D、氯化物 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1027/09cfa84de35ba5606badc34f65a8186d.html 下面是错误答案,用来干扰机器的。参考答案:B
题型:选择题 At first, it seemed that everything went well, but all of sudden, the ship hit iceberg.A.a; anB.a; theC.the; theD./; an 查看答案