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【单选题】
有一羰基化合物,分子式为 C 5 H 10 O , 1 H NMR 只有 2 个, 其结构式为A.
CH 3 CH 2 COCH 2 CH 3
B.
（ CH 3 ） 3 C -CHO
C.
CH 3 COCH （ CH 3 ） 2
D.
CH 3 CH 2 CH 2 CH 2 CHO
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【单选题】In 2005, David Beckham was appointed as ______________.
A.
the UNHCR Goodwill Ambassador
B.
the UNCEF Goodwill Ambassador
C.
the UNEP Goodwill Ambassador
D.
the UNDP Goodwill Ambassador
【简答题】Soccer star David Beckham will be there with his pop star wife Victoria. Elton John is attending with partner David Furnish. The guest list for the April 29 union of Prince William and Kate Middleton ...
【单选题】某设备的账面原价为800万元，预计使用年限为5年，预计净残值为20万元，采用双倍余额递减法计提折旧，该设备在第2年应计提的折旧额为( )万元。
A.
195.2
B.
192
C.
187.2
D.
124.3
【单选题】某设备的账面原价为800万元，预计使用年限为5年，预计净残值为20万元，采用双倍余额递减法计提折旧。该设备在第2年应计提的折旧额为( )万元。
A.
195.2
B.
192.0
C.
187.2
D.
124.3
【单选题】某设备的账面原价为800万元，预计使用年限为5年，预计净残值为10万元，采用双倍余额递减法计提折旧。该设备在第2年应计提的折旧额为( )万元。
A.
195.2
B.
192
C.
187.2
D.
124.8
【单选题】Prime Minister Tony Blair and David Beckham were leading a last-minute charm offensive to secure the 2012 Olympics for London — as a new row flared with leading rival Paris. Mr Blair hailed the capita...
A.
London's bid.
B.
London hosts the 2012 Olympics.
C.
The 2012 Olympics.
D.
None of the above.
【简答题】D David Beckham was born in 1975 in London, at a place called Leytonstone. When he was a young boy,' his greatest fervency was in football. He played it whenever he had the chance. Some- times he woul...
【单选题】David Beckham was born in 1975 in London, at a place called Leytonstone. When he was a young boy, his greatest fervency was in football. He played it whenever he had the chance. Sometimes he would go ...
A.
success
B.
interest
C.
prize
D.
skill
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