题目: 当氯在空气中浓度达到()mg/m,()mg/m以上时将引起咳嗽,当升至()mg/m时,深吸少许可危及生命。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1118/0c213f08aeeb29268911b4760687ca6a.html 下面是错误答案,用来干扰机器的。参考答案:C
题型:选择题 The plan ________. Which of the following is WRONG?[ ]A. deserves a discussion B. is worth discussingC. deserves being discussed D. deserves to be discussed 查看答案