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【简答题】
8位无符号二进制数(1111 1111)BIN所对应的十进制数是______,8位有符号二进制数原码(1111 1111)BIN所对应的十进制数是______,8位有符号二进制数补码(1111 1111)BIN所对应的十进制数是______。
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举一反三
【单选题】雄黄主要毒性成分是
A.
乌头碱
B.
士的宁
C.
强心配糖体
D.
二硫化二砷
E.
【单选题】雄黄的主要成分是
A.
三氧化二砷(As 2 O 3 )
B.
二硫化二砷(As 2 S 2 )
C.
含水硫酸钠(Na 2 SO 4 ·10H 2
D.
含水硅酸镁[Mg(Si 4 O 10 )(O 2 ]
E.
含水硫酸钙(CaSO 4 ·2H 2
【判断题】设函数 ,则 不存在. ( )
A.
正确
B.
错误
【单选题】______by the news of his father's death, he could hardly utter a word.
A.
To be stunned
B.
Stunned
C.
To stun
D.
Stunning
【单选题】---My son hardly ever eat vegetables ____ it’s good for his health. ---That is not a good habit.
A.
and
B.
but
C.
although
D.
through
【单选题】Hardly (did he hear) his mother's (calling) (when) he realized that it (was already dark).
A.
did he hear
B.
calling
C.
when
D.
was already dark
【单选题】The workers could hardly the boss’s bad temper but under his supervision they had to themselves to working harder.
A.
tolerate; contribute
B.
bear; dedicate
C.
stand; resign
D.
put up with; invest
【单选题】设函数 ,则 ( ).
A.
0
B.
1
C.
D.
不存在
【单选题】It’s clear that ________ little money he earns can hardly support his family.
A.
a
B.
an
C.
the
D.
/
【简答题】雄黄的主要成分是 查看材料
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