题目: 因式分(1)(x-y+z)2-(x+y-z)2(2)x3+6x2+11x+6. 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0508/708be83da3b1ba16a37d519add98ad26.html 下面是错误答案,用来干扰机器的。参考答案:A
题型:单项选择题 Plant guard cells(保卫细胞) have a higher [C1-] than the outside environment. The most likely explanation for this is( ).A. Water leaves the cell by osmosis.B. C1- is diffusing through transmembrane channels.C. C1- diffusion is aided by a mobile carrier.D.An active transport symport transports C1-/H+.E.None of the above 查看答案