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【简答题】
单片机89C51片内有两个16位的定时/计数器，即T0和T1，它们都有（）和计数的功能。
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皮皮学刷刷变学霸
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【单选题】人际交往中表现的社会距离即社会交往,同事,朋友,熟人,邻居等日常交谈的距离,应是?
A.
0－150
B.
150－450
C.
450－750
D.
1200－2100
【单选题】The strange man asked me to hand the letter to _____ I met in the police station, saying it was very important.
A.
whoever
B.
whatever
C.
whichever
D.
whomever
【单选题】The Chinese saying means“______”.
A.
the farther a man goes, the more treasures he gets
B.
the more a man sees, the more knowledge he gets
C.
travelling is more interesting than reading
D.
the farther a man goes, the more hooks he reads
【单选题】By saying “the rewards of a man’s industry follow with equal steps the progress of his labor” （Line 10，Para． 1），the author means （ ）．
A.
the more diligent one is，the bigger his returns
B.
laborious work ensures the growth of an industry
C.
a man’s business should be developed step by step
D.
a company’s success depends on its employees’ hard work
【单选题】The Chinese saying means'______'
A.
The farther a man goes, the more treasures he gets
B.
The more a man sees, the more knowledge he gets
C.
Travelling is more interesting than reading
D.
The farther a man goes, the more books he reads
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