问题
单项选择题
极谱分析分析的定量基础是（）。
A.扣除残余电流的极限扩散电流id或平均极限电流6/7imax与被测物质的浓度成正比
B.扩散电流i与被测物质的浓度成正比
C.半波电位φ1/2与被测物质的浓度成反比
D.极限扩散电流id与被测物质的电极表面浓度C0成正比
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
极谱分析分析的定量基础是（）。
A.扣除残余电流的极限扩散电流id或平均极限电流6/7imax与被测物质的浓度成正比
B.扩散电流i与被测物质的浓度成正比
C.半波电位φ1/2与被测物质的浓度成反比
D.极限扩散电流id与被测物质的电极表面浓度C0成正比
参考答案：A
| 完形填空。 |
| Mark Twain was a pen name of Samuel Langhorne Clemens. He was born on November30, 1835, in a small town in Florida, the USA. He 1 a few naughty boys who later 2 in his stories. At the age of 12, his father died, and he began to work, first as a printer, then on a river boat. Those years on the boat went into his book "Life 3 the Mississipi. (密西西比河)" 4 the Civil War (国内战争) he worked as a reporter and used Mark Twain as his pen name. The stories he wrote in this period 5 him famous and popular. He made a lot of money by writing, lecturing and running 6 publishing house. But he spent all of it on high living and 7 business. Mark Twain 8 as a "funny man". But in fact he took a serious view of life. Many sad things happened in his own life. All his 9 helped to shape (形成) his stories 10 showed the dark side of society. He died as an old man of 75 in 1910. |
( )1.A.grew | B.grew up B.became B.in B.During B.kept B.himself B.successful B.was known B.experienced B.where | C.grew up with C.appeared C.at C.For C.served C.his C.successfully C.was knowing C.happiness C.which | D.grew up in D.disappeared D.for D.Since D.encouraged D.his own D.unsuccessful D.was to be known D.sadness D.in which |