皮皮学，免费搜题
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搜题
【单选题】
埋弧自动焊主要用于焊A.
有色金属；
B.
平焊位置长直焊缝
C.
厚度≥100mm的焊件；
D.
垂直位置长直焊缝。
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】—What is your mother? —__________.
A.
She is my mother
B.
She is a policeman
C.
She is a nurse
【单选题】— How is Sally? — _____. [ ]
A.
She doesn't know
B.
She is my sister
C.
She is fine
D.
She is in her room
【单选题】—Who is the girl in red in the photo? —She is my _____ Lily. She is my uncle’s daughter.
A.
sister
B.
aunt
C.
cousin
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