试用 Debye-Hückel 极限公式计算[tex=2.286x1.0]mQC5bVhEvIohRXFWIzFj6DUFZ1YD0n5SRbSxduotRAY=[/tex]时下列电解质的 [tex=1.071x1.0]UmAVQCDXwNAC1FBMj+MGtg==[/tex]。[tex=11.857x1.429]96NyXHUJFIb+zrX2uzQ0sxZIKv5HzFhylrr6H4ExZlep/3G52kca4chnCor1abUZKj5FrjbcR5eMMHUQUJX1cfo8SVIICrvmXj7Pdfcmeec=[/tex] 

 试用 Debye-Hückel 极限公式计算[tex=2.286x1.0]mQC5bVhEvIohRXFWIzFj6DUFZ1YD0n5SRbSxduotRAY=[/tex]时下列电解质的 [tex=1.071x1.0]UmAVQCDXwNAC1FBMj+MGtg==[/tex]。[tex=12.357x1.429]DjIQK3QWDEnQ61yW15BArbtupSPwReam0k++HqhfiVvgiJljZgJjaxgrXAumc1FGp/vpb3YnSH9RrA9R42pzVMxLKkO3lShJUoaa15UEo2g=[/tex]

 试用 Debye-Hückel 极限公式计算[tex=2.286x1.0]mQC5bVhEvIohRXFWIzFj6DUFZ1YD0n5SRbSxduotRAY=[/tex]时下列电解质的 [tex=1.071x1.0]UmAVQCDXwNAC1FBMj+MGtg==[/tex]。 [tex=11.357x1.429]z8+JIXPGbeT5IjV+bOZewtMMNEb8yRCoKpoDoXHC/WwUimJBEVfjY3YCST8v2g5mDy9cFk0Ph+bhQnAWVLMjTNX4k2CGXgiffkJY/+9QldI=[/tex]

[tex=2.786x1.214]JC0ErjKiHORJT22S+ID2kcGU+w2hB5zcHRBPxel/pcezHBcGQpGaQG/lFpFkjGL4[/tex] 水溶液的质量摩尔浓度为 [tex=0.929x0.786]VF0GLe2VBE/4VKNzpyOfFg==[/tex],离子平均活度系数为 [tex=1.071x1.0]UmAVQCDXwNAC1FBMj+MGtg==[/tex],则此溶液的活度为[input=type:blank,size:4][/input]。

有电池[tex=15.5x1.5]NivhDsrxuVssNTGOChbb000AyHbcHTVzNorRpU8EIFLDdINrB1nSxuL/PCiGzcHX/bfO5d5GLmRHYoFXduOBUqixKayrpWLTdm+QnFrrcE71HZ4G+X2PTR5smo+G0oi6[/tex], 改变 [tex=1.857x1.0]J5/m7wHLEvPVmioJRGa25A==[/tex] 的依度,测得的电动势也不同, 三组实验数据如下：[img=890x175]17aaaa0c71c701d.png[/img]用 Debye-Hückel 公式计算各个平均离子活度因子 [tex=1.071x1.0]UmAVQCDXwNAC1FBMj+MGtg==[/tex], 设[tex=9.857x1.857]By152sp1rw814TbfWX7+KK6hKHNB0qAmeFWbSOGm8QeNp/MJtD7VufC6a+RnPbo+W98NsNS+0xPBGx9xwa2q/Q==[/tex]

for i in range(b.max_row): for j in range(b.max_column): print(b.cell(row=i,column=j).value)上面语句运行的结果是：__________。 A: 1 1 1 1 1 1 1 1 1 1 B: 1111111111 C: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D: 出现异常

【单选题】CDMA通信的基站,假定基站A的码片序列是+1 +1 +1 -1 -1 +1 -1 -1,基站发射bit为101时,实际发射的信号是 A. +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 –1 –1 –1 +1 +1 –1 +1 +1 B. +1 +1 +1 -1 -1 +1 -1 -1 –1 –1 –1 +1 +1 –1 +1 +1 +1 +1 +1 -1 -1 +1 -1 -1 C. +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 D. –1 –1 –1 +1 +1 –1 +1 +1 –1 –1 –1 +1 +1 –1 +1 +1 –1 –1 –1 +1 +1 –1 +1 +1

for i in range(1,11): for j in range(1,11): b.cell(row=i,column=j).value=1 #b是一个工作表对象for i in range(1,11): for j in range(1,11): print(b.cell(row=i,column=j).value,end=" ") print()上面程序代码运行的结果是（）。 A: 1 B: 1 1 1 1 1 1 1 1 1 1 C: 1111111111 D: 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 1

下列哪个码片序列不能用于CDMA通信 A: ( -1 -1 -1 +1 +1 -1 +1 +1 ) B: ( -1 -1 +1 -1 +1 +1 +1 -1 ) C: ( -1 +1 -1 +1 +1 -1 -1 -1 ) D: ( -1 +1 -1 -1 -1 -1 +1 -1 )

请仔细观察下面行列式的计算过程，如果四个等号都理解了，请选择A，否则请选择B。 | a 1 1 1 1 | |a＋4 a＋4 a＋4 a＋4 a＋4| | 1 a 1 1 1 | | 1 a 1 1 1 | | 1 1 a 1 1 |= | 1 1 a 1 1 | | 1 1 1 a 1 | | 1 1 1 a 1 | | 1 1 1 1 a | | 1 1 1 1 a | | 1 1 1 1 1 | | 1 a 1 1 1 | =(a＋4) | 1 1 a 1 1 | | 1 1 1 a 1 | | 1 1 1 1 a | | 1 1 1 1 1 | | 0 a–1 0 0 0 | =(a＋4) | 0 0 a–1 0 0 | | 0 0 0 a–1 0 | | 0 0 0 0 a–1 | =(a＋4)(a–1)^4