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【单选题】
机械设计基础这一门学科,主要研究常用机构和 _______ 的工作原理、结构特点和设计计算方法。A.
各类机械零件和部件
B.
通用机械零件和部件
C.
专用机械零件和部件
D.
标准化的机械零件和部件
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【单选题】If I had some money, I _______ the poor boy.
A.
help
B.
will help
C.
would help
D.
would have help
【简答题】催化剂在生产运行中,暂时中毒而失去大部分活性时,可采用蒸汽或空气处理、酸碱液处理等方法使催化剂恢复或接近原来的活性叫做催化剂的()。
【单选题】You can stay in my room ______ you promise not to use my computer.
A.
so far as
B.
except
C.
unless
D.
provided
【单选题】You can use my car, ( ) you promise to be back before lunch.
A.
as for as
B.
as much as
C.
as good as
D.
as long as
【单选题】– Can you tell me how to use a micro blog on my phone? – ___________. But I have to finish my work first.
A.
No problem
B.
No way
C.
Don’t mention it
【简答题】将下列句子改为倒装句: If I had any money with me,I could lend you some.
【单选题】You can stay in my room ______ you promise not to use the computer.
A.
so far as
B.
except
C.
unless
D.
provided
【简答题】You can use my computer you like.
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