计算机硬件系统中最核心的部件是()。
参考答案:CPU
Please come__________ here. Don't go__________ now. [ ]
A. to; home
B. /;to home
C. /;home
D. to; to home
下列排列顺序正确的是( )
A.热稳定性:H2O>HF>H2S
B.最高正化合价:F>N>C
C.非金属性:Cl>S>Si
D.酸性:H2CO3>H3PO4>H2SO4