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【单选题】
总效用达到最大时,边际效用一定( )。
A.
大于零
B.
等于零
C.
小于零
D.
等于平均效用
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举一反三
【单选题】Admitting ______ wrong should not be the rea son for our not admitting those who want to join the League _____ the organization. [     ]
A.
to have done; to
B.
having done; for
C.
doing; to
D.
to do; for
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【单选题】The number of people who ____English as a foreign language __more than 750 million.
A.
learns; is
B.
learn; are
C.
learns; are
D.
learn; is
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【单选题】— What's wrong with your computer? — Something is wrong with it.I'd like to get it ______. [     ]
A.
to repair
B.
repaired
C.
repairing
D.
repair
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【单选题】单项桥式整流电路中接入电容滤波器后, 输出电压( )
A.
升高
B.
降低
C.
不变
D.
无法判断
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【单选题】Among the American young intellectuals in the 1830s and 1840s, who was regarded as the leader of transcendalism?
A.
Ralph Waldo Emerson.
B.
Henry David Thoreau.
C.
Walt Whitman.
D.
Mark Twain.
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【单选题】The underlined part 'print-illiterate' in the text refers to_______
A.
one who has never learnt printing
B.
one who has never learnt to read
C.
one who is not a computer literate
D.
one who is not able to use a typewriter
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【单选题】Try to what's wrong with the toy now.
A.
describe
B.
speak
C.
say
D.
talk
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【单选题】单项桥式整流电路中接入电容滤波器后,输出电压( )。
A.
降低
B.
升高
C.
不变
D.
无法判断
查看完整题目与答案
【单选题】在多媒体系统中，最适合存储声、图、文等多媒体信息的是（）。
A.
激光视盘
B.
硬盘
C.
CD-ROM光盘
D.
ROM
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【单选题】What's wrong with Maggie?
A.
She doesn't want to go to the dance.
B.
She is nervous about asking Brian to the dance.
C.
She is not allowed to go to the dance.
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相关题目：
【单选题】Admitting ______ wrong should not be the rea son for our not admitting those who want to join the League _____ the organization. [     ]
A.
to have done; to
B.
having done; for
C.
doing; to
D.
to do; for
查看完整题目与答案
【单选题】The number of people who ____English as a foreign language __more than 750 million.
A.
learns; is
B.
learn; are
C.
learns; are
D.
learn; is
查看完整题目与答案
【单选题】— What's wrong with your computer? — Something is wrong with it.I'd like to get it ______. [     ]
A.
to repair
B.
repaired
C.
repairing
D.
repair
查看完整题目与答案
【单选题】单项桥式整流电路中接入电容滤波器后, 输出电压( )
A.
升高
B.
降低
C.
不变
D.
无法判断
查看完整题目与答案
【单选题】Among the American young intellectuals in the 1830s and 1840s, who was regarded as the leader of transcendalism?
A.
Ralph Waldo Emerson.
B.
Henry David Thoreau.
C.
Walt Whitman.
D.
Mark Twain.
查看完整题目与答案
【单选题】The underlined part 'print-illiterate' in the text refers to_______
A.
one who has never learnt printing
B.
one who has never learnt to read
C.
one who is not a computer literate
D.
one who is not able to use a typewriter
查看完整题目与答案
【单选题】Try to what's wrong with the toy now.
A.
describe
B.
speak
C.
say
D.
talk
查看完整题目与答案
【单选题】单项桥式整流电路中接入电容滤波器后,输出电压( )。
A.
降低
B.
升高
C.
不变
D.
无法判断
查看完整题目与答案
【单选题】在多媒体系统中，最适合存储声、图、文等多媒体信息的是（）。
A.
激光视盘
B.
硬盘
C.
CD-ROM光盘
D.
ROM
查看完整题目与答案
【单选题】What's wrong with Maggie?
A.
She doesn't want to go to the dance.
B.
She is nervous about asking Brian to the dance.
C.
She is not allowed to go to the dance.
查看完整题目与答案