— Shall we watch Japanese cartoons?
— Japanese cartoons are not my cup of tea. I watch talk shows.
A:would like
B:would better
C:would rather
D:should rather
同在3月份,当黑龙江还是冰天雪地时,海南岛已是春耕大忙了,这是由于我国 ( )
如图所示,下端封闭且粗细均匀的“7”型细玻璃管,竖直部分长l=50cm,水平部分足够长,左边与大气相通,当温度t1=27℃时,竖直管内有一段长为h=10cm的水银柱,封闭着一段长为l1=30cm的空气柱,外界大气压始终保持P0=76cmHg,设0℃为273K,试求:
①被封闭气柱长度为l2=40cm时的温度t2;
②温宿升高至t3=177℃时,被封闭空气柱的长度l3.
对于闭合电路欧姆定律的理解,下列说法一定正确的是( )