皮皮学,免费搜题
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【简答题】
Wise buying is a positive way in which you can make your money go further. The way you go about purchasing an article or a service can actually 1 you money or can add to the cost. Take the 2 example of a hairdryer. If you are buying a hairdryer, you might think that you are making the 3 buy if you choose one whose look you like and which is also the cheapest 4 price. But when you get it home you may find that it takes twice as long as a more expensive 5 to dry your hair.The cost of the electricity plus the cost of your time could well make your hairdryer the most expensive one of all. So what principles should you 6 when you go out shopping? If you keep your home, your car or any valuable 7 in excellent condition, you'll be saving money in the long run. Before you buy a new 8 , talk to someone who owns one .If you can, use it or borrow it to check it suits your particular purpose. Before you buy an expensive 9 , or a service, do check the price and what is on offer. If possible, choose 10 three items or three estimates. [A]possession [B]save [C]best [D]appliance [E]material [F]from [G]simple [H]with [I]in [J]element [K]model [L]item [M]easy [N]adopt [O]reasonable
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举一反三
【判断题】函数 在 内是凹的。
A.
正确
B.
错误
【单选题】In the last paragraph why did the author use the word 'distant'?
A.
Because they lived far from each other.
B.
Because they worked in different departments.
C.
Because they were indifferent to each other.
D.
Because only three of them would participate in the operation.
【单选题】某镇多年未发现伤寒,某年秋季发现一例伤寒后,在同一街道相继发生了3例二代伤寒病例,这可能是伤寒的一起
A.
散发
B.
爆发
C.
带入
D.
大流行
E.
复发
【简答题】判断信号 是功率信号还是能量信号,若是功率信号?
【单选题】某镇多年未发现伤寒,某年秋季发现1例伤寒后,在同一街道相继发生了3例二代伤寒病例,这可能是伤寒的一起
A.
散发
B.
暴发
C.
流行
D.
大流行
【单选题】某镇多年未发现伤寒,某年秋季发现一例伤寒后,在同一街道相继发生了3例二代伤寒病例,这可能是伤寒的一起
A.
散发
B.
暴发
C.
流行
D.
大流行
E.
复发
【单选题】某镇多年未发生伤寒,某年秋季发现一例伤寒后,在同一街道相继发生了3例二代伤寒病例,这可能是伤寒的一起
A.
散发
B.
暴发
C.
带入
D.
大流行
E.
复发
【单选题】关于表面粗糙度下列说法错误的是()。
A.
提高零件的表面粗糙度,可以提高间隙配合的稳定性;
B.
零件表面越粗糙,越容易被腐蚀;
C.
降低表面粗糙度值,可以提高零件的密封性能;
D.
零件的表面粗糙度值越小,则零件的质量、性能就越好。
【单选题】某镇多年未发现伤寒,某年秋季发现一例伤寒后,在同一街道相继发生了5例二代伤寒病例,这可能是伤寒的一起()。
A.
散发
B.
爆发
C.
流行
D.
大流行
E.
复发
【单选题】关于表面粗糙度下列说法错误的是()
A.
提高零件的表面粗糙度,可以提高间隙配合的稳定性;
B.
零件的表面越粗糙,越容易被腐蚀;
C.
降低表面粗糙度值,可以提高零件的密封性能;
D.
零件的表面粗糙度值越小,零件的质量、性能就越好。
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