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【简答题】
已知| a =2 ，| b |=1， a 与 b 的夹角为60°，求向量 . a +2 b 与2 a + b 的夹角．
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举一反三
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Why not try...
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【单选题】求下列代码中字符串对象res的值 NSString * str=@”wuxi vocational institude of commerce ”; NSString *res=[str substringFromIndex:5]; res=[res substringWithRange:NSMakeRange(11,9)]
A.
vocational
B.
ional instit
C.
onal inst
D.
institude
【判断题】【中职第一部分】Wuhan Railway Vocational College of Technology is a full-time higher vocational college. It is characterized by railway industry background.该句的翻译为：“武汉铁路职业技术学院是一所全日制高等职业院校。
A.
正确
B.
错误
【单选题】议论文中的句子 “ More than 50% of vocational students would choose to work in a startup company. ” 运用了哪种写作技巧?
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Facts and statistics
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【单选题】She had some special training from a vocational school,so I think she can get the new job.special的中文意思是:
A.
适当的
B.
业余的
C.
特别的
D.
/
【简答题】什么叫冰蓄冷空调?
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