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【单选题】
一个字长为六位的二进制数能表示的十进制数值范围是?A.
0到64。
B.
1到64
C.
1到63。
D.
0到63。
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举一反三
【简答题】People who refuse to ________ with the law will be punished. A) obey B) consent C) conceal D) comply
【单选题】If people ______ the traffic rules, there will be fewer accidents.
A.
will obey
B.
obey
C.
obeys
【简答题】（B） What does an astronaut eat in space? This is a question that will puzzle many, as people rarely think of that. In the early space-travel years, astronauts ate dehydrated (脱水的) foods that were eate...
【简答题】可以使用 String 类的 方法判断一个字符串的后缀是否是字符串 s 。
【简答题】可以使用 String 类的 方法判断一个字符串的前缀是否是字符串 s 。
【单选题】Dogs who accompany blind people must learn______.
A.
to obey all orders
B.
to obey only safe orders
C.
never to cross busy roads
D.
to cross roads when commanded
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