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【简答题】
表皮由角化的___________构成，它包括___________细胞和___________细胞；前者从基底面到游离面分为五层，依次为___________、___________、___________、___________和___________；后者包括___________、___________和___________。
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举一反三
【单选题】A Societies all over the world name places in similar ways. Quite often there is no official naming ceremony but places tend to be called names as points of reference by people. Then an organized body...
A.
the government is usually the first to name a place
B.
many places tend to have more than one name
C.
a ceremony will be held when a place is named
D.
people prefer the place names given by the government
【单选题】Wild Bill Donovan would have loved the Internet. The American spymaster who built the Office of Strategic Services in the World War II and later laid the roots for the CIA was fascinated with informat...
A.
received support from fans like Donovan
B.
remolded the intelligence services
C.
restored many common pastimes
D.
revived spying as a profession
【简答题】A．Because he is the friend of the manager in that hotel. B．Because he is the local officer. C．Because he is a local resident. D．Because he has just lost his job.
【简答题】已知sinα= ,且 α 是第二象限角,则cosα=
【单选题】C51的复位方式是怎样的
A.
必须在RST引脚上接1个以上机器周期高电平
B.
必须在RST引脚上接2个以上时钟周期高电平
C.
必须在RST引脚上接1个以上时钟周期高电平
D.
必须在RST引脚上接2个以上机器周期高电平
【单选题】GpioDataRegs.GPAPUD.bit.GPIO11=1; 在CCS中,上述语句的作用是: ( )
A.
将GPIO11设置为输入
B.
将GPIO11设置为输出
C.
GPIO11上拉电阻有效
D.
GPIO11上拉电阻无效
【单选题】GpioDataRegs.GPADIR.bit.GPIO11=0; 在CCS中,上述语句的作用是: ( )
A.
将GPIO11设置为输入
B.
将GPIO11设置为输出
C.
GPIO11上拉电阻有效
D.
GPIO11上拉电阻无效
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