钢筋工程的验收内容是什么?
参考答案:
①纵向受力钢筋的品种、规格、数量、位置等
②钢筋的连接方式、接头位置、接头数量、接头面积率等
③箍筋、横向钢筋的品种、规格、数量、间距等
One day Einstein met an old friend of his in the street in New York. “Mr. Einstein,” said the friend, “you need a new coat. Look, it is very old!” “It doesn’t matter,” answered Einstein, “Nobody knows me here.” A few years later, they met in New York again. Einstein became a famous scientist, but he still wore the same old coat. Again his friend tried to persuade (劝说) him to buy a new coat. “There is no need now, since everybody here knows me.”
阅读短文,判断正误。正确的用“T”。错误的用“F”. (每小题1分,共5分)
小题1:The story happened in England.
小题2:Einstein was a great scientist.
小题3:His friend asked him to buy a new coat because he was a scientist.
小题4:Einstein didn’t want to buy a new coat because he had no money.
小题5:A few years later Einstein became a great scientist and still wore the old coat.
在协同进化过程中,每一个物种都会经历多个其它物种给它施加的选择压力,同时它也会给多个其它物种产生进化影响,这被称为()。
A、顺序进化
B、弥散协同进化
C、共适应
D、协同成种