已知a>0，b>0，a＋b＝2，则y＝＋的最小值是 �

已知a>0，b>0，a＋b＝2，则y＝＋的最小值是 (　　)

A. B．4 C. D．5

答案

相关题目

某物理学习小组的同学在研究性学习过程中，用伏安法研究

某物理学习小组的同学在研究性学习过程中，用伏安法研究某电子元件R1（6V，2.5W）的伏安特性曲线，要求多次测量尽可能减小实验误差，备有下列器材

—You could have asked Mr Johnson for help. He is kind-hearted. —I ________ t

—You could have asked Mr Johnson for help. He is kind-hearted. —I ________ that. A whole day ________. A. forget; wastes B. forgot; was wasted C. forgot; had wasted D. fo

----I’d rather have some wine, if you don’t mind.----_______.A. No, you’d

----I’d rather have some wine, if you don’t mind.----_______.A. No, you’d better not B. Not at all, anything you want C. Thank you all the sam

英国媒体2005年4月15日报道，高露洁牙膏中含有的消毒剂三氯

英国媒体2005年4月15日报道，高露洁牙膏中含有的消毒剂三氯生遇含氯自来水能生成哥罗芳(三氯甲烷)，哥罗芳能导致肝病甚至癌症，已知三氯生的结构

下列热化学方程式中△H代表燃烧热的是A CH4 ( g ) + 3/2O2( g )

下列热化学方程式中△H代表燃烧热的是A CH4 ( g ) + 3/2O2( g ) = 2H2O ( l ) + CO ( g ) △HB C6H12O6( s ) + 6O2 ( g ) = 6CO2 (g) + 6H2O ( l) △HC S ( s ) + 3/2O2 (

Jack was sure to get this year’s scholarship as the standards of scholarship w

Jack was sure to get this year’s scholarship as the standards of scholarship were not terribly_________ A. tough B. rough C. difficult D. demand

You look really cool in the new dress, dear. How much did you ________ it?A．sp

You look really cool in the new dress, dear. How much did you ________ it?A．spendB．takeC．costD．pay for

有5种物质：①石灰水，②石灰石，③红热的碳，④水，⑤食

有5种物质：①石灰水，②石灰石，③红热的碳，④水，⑤食盐水，其中能吸收CO2并反应放出另外一种气体的是 …（） A.①④

已知a>0，b>0，a＋b＝2，则y＝＋的最小值是 �

答案

相关题目

最新题目