皮皮学，免费搜题
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搜题
【单选题】
铁棒埋于土壤中，导致铁棒下部较上部腐蚀严重，其实质属于（）。A.
微观腐蚀
B.
盐浓差腐蚀
C.
氧浓差腐蚀
D.
温差腐蚀
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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】There were seven ______ Negroes working on the farm.
A.
hundreds
B.
hundred of
C.
hundreds of
D.
hundred
【简答题】幼儿园____负责幼儿园的全面工作
【简答题】加热时获得奥氏体的组织转变称为（ ）。A. 奥氏体化
【单选题】There were seven people in the car, ______ a pile of luggage and four dogs.
A.
leave alone
B.
leave behind
C.
let alone
D.
let go
【单选题】There were seven people lived in their house, so he played soccer ______.
A.
in the street
B.
in their small house
C.
in the big game