A.0.1%CH4
B.0.2%CH4
C.0.3%CH4
D.0.01%CH4
第2题
B、0.2%CH
C、0.3%CH
D、0.01%CH
第5题
B、0.1%CH4,0.4%CH4
C、0.01%CH4,0.1%CH4
D、0.01%CH4,0.01%CH4
第10题
B、0.1%CH ,0.4%CH
C、0.01%CH ,0.1%CH
D、0.01%CH ,0.01%CH
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!