[tex=1.357x1.214]1QfQ/L7e7Ybqz7/+l580CfmxYd1VkO8Vkl2OouwgQqc=[/tex]分子是否付红外及远红外光谱?

 将有关离子浓度增大 5 倍, [tex=0.786x1.0]I/kNMtd8YcgkWCrgriW/hA==[/tex] 值保持不变的电极反应是 未知类型：{'options': ['[tex=5.786x1.357]kYWQhjUMlC0WMlfWQaAg/mc9MC0rtMy/3A4CZGPl9CcpJ0DWuimGmZ9PafYmegMu[/tex]', '[tex=13.5x1.5]QEUoJF1kQgL73ycKX9sVlVpNXjLPV1ao89AZ6C3o7uKOmX4SvlSL8xF+qGGrRwBdhuIQA8nXhkayvxIvcxKT8G/b+nPRmA0KOBvhcA9cKbng2FGUT0ijwinPagMb+tx4fRC2vfHPEKRSJ77Po36fpQ==[/tex]', '[tex=5.357x1.214]1QfQ/L7e7Ybqz7/+l580Cf80kC5+4fer8Gc/4beVG8SLsiwdzKNm+nRnJpZtkU/j[/tex]', '[tex=6.143x1.357]xaXcThibTI3wZxi10FYG31t9GKmWthFszzuhuRsMdToqeH/kx6z6NE0Ggk6L/3er[/tex]'], 'type': 102}

气液逆流接触的吸收塔, 在总压为[tex=4.0x1.0]mzqTp7K+P4Ay7EOfAU6S06P1rnDOHB/uP6oBh8S4HSc=[/tex]下用水吸收 [tex=1.357x1.214]1QfQ/L7e7Ybqz7/+l580CfmxYd1VkO8Vkl2OouwgQqc=[/tex]气, 进入塔底的气体混台物中含氯体积分数为[tex=1.357x1.143]4zUCkVXz9aikHBcL/hTQ6g==[/tex], 塔底出口的水中含氯摩尔分数[tex=5.357x1.357]cY6g0hkCOeauoE73BFXVpQKzJC3jpIvyljZzUfema+0=[/tex]。试求两种不同温度下塔底的吸收推动力, 分别以[tex=3.071x1.357]1U4Sw8AAEc6dFz+GiCurwMJl5Hod1F7zeM2HQDaqZeE=[/tex]及[tex=2.929x1.357]PwuY9CjlB3854iAVMWxW9n7oSO2kN8a4yqz4/nHnwuo=[/tex]表示。(1) 塔底温度为[tex=2.143x1.071]8LIofHN9OwL+t1Gb0rx/gjfLy7Qi9Fyr5VCI3TePFlU=[/tex]; (2) 塔底温度为[tex=2.143x1.071]fSVBkpRze22P7izI9L/s/ZWn82nwZcu+Sw4XW6BPLlE=[/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

共有4个站进行码分多址通信。4个站的码片序列为：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） 现收到这样的码片序列：（-1 +1 -3 +1 -1 -3 +1 +1），则（ ）发送1。

共有四个站进行CDMA通信，现收到这样的码片序列（-3 +1 -1 -1 +1 +1 +1 -3），则下列站点发送了数据1的是（ ） 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）