皮皮学，免费搜题
登录
搜题
【判断题】
题目:一般认为金属在干燥气体中的腐蚀,如高温氧化、过热蒸汽腐蚀;金属在有机介质中的腐蚀,如石油输送管部件的腐蚀,是化学腐蚀。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】国家标准规定在孔、轴公差等级的选用上,采用“工艺等价原则”,对于常用尺寸段公差等级较高的配合,考虑到孔不如轴好加工,孔的公差等级应比轴 级
【单选题】He had understood nothing ______ to understand.
A.
neither he had sought
B.
nor had he sought
C.
and he had neither sought
D.
and nor he had sought
【判断题】In product introduction or demonstration, if the listener is not sure about why he/she needs the product, presenters can refer to their own experiences, such as what problems they solved via using the...
A.
正确
B.
错误
相关题目：