皮皮学，免费搜题
登录
搜题
【单选题】
用于焊接的二氧化碳气体，其纯度要大于( )%。A.
98.5
B.
99.5
C.
99.7
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】— How did you play in the match? — Well, our team was ahead by 2 to 0 during the first half, but we _____ in the last ten minutes. [ ]
A.
had lost
B.
have lost
C.
were losing
D.
lost
【单选题】.Our team was ahead during the first half, but we _____ in the last ten minutes.
A.
were won
B.
were lost
C.
were beaten
D.
won
【单选题】下列有关金属性质的说法错误的是：（ ）
A.
常温下所有金属都是银白色的固体
B.
在空气中灼烧铜丝，其表面会变黑
C.
铜、银等金属具有良好的导电性
D.
埋在潮湿、疏松、透气的酸性土壤中的铸铁管容易被腐蚀
【单选题】Our team was by their team in the football game yesterday.
A.
defeated
B.
won
C.
gained
D.
earned
相关题目：
参考解析：
知识点：
题目纠错 0
发布
