销售管家业务支持哪些手机操作系统（） A.安卓系统 B.IOS系统 C.安卓和IOS 发布时间：2018-02-11 09:11 │ 来源：www.tikuol.com 题型：单项选择题 问题： 销售管家业务支持哪些手机操作系统（）A.安卓系统B.IOS系统C.安卓和IOS都支持D.二者都不支持
题型：单项选择题 完形填空。 Food is important. Everyone needs to 1 well if he or she wants to have a strong body. Our minds also need a kind of food. This kind of food is 2 . We begin to get knowledge even when we are young. Small children are 3 in everything around them. They learn 4 while they are watching and listening. When they are getting older they begin to 5 story books, science books…, anything they like. When they find somethingnew, they have to ask questions and 6 to find out the answers. What is the best 7 to get knowledge? If we learn 8 ourselves, we will get the most knowledge. If we are 9 getting answers from others and don't ask why, we will never learn more and understand 10 . ( ) 1. A. sleep ( ) 2. A. sport ( ) 3. A. interested ( ) 4. A. everybody ( ) 5. A. lend ( ) 6. A. try ( ) 7. A. place ( ) 8. A. on ( ) 9. seldom (几乎不) ( ) 10. A. harder B. read B. exercise B. interesting B. something B. write B. have B. school B. with B. always B. much C. drink C. knowledge C. weak C. nothing C. learn C. think C. way C. to C. certainly C. well D. eat D. meat D. good D. anything D. read D. wait D. road D. by D. sometimes D. better 查看答案
题型：单项选择题 有关PCR技术的说法，不正确的是[ ]A．PCR是一项在生物体外复制特定的DNA片段的核酸合成技术B．PCR扩增中必须有解旋酶才能解开双链DNAC．利用PCR技术获取目的基因的前提是要有一段已知目的基因的核苷酸序列D．PCR技术依据的是DNA双链复制的原理 查看答案