外压容器的主要失效形式是什么?
参考答案:外压容器的主要失效形式是刚度不足引起的失稳、强度不足引起的破裂。
单词拼写,一空一词.每小题1分,满分10分。
小题1:His e_________ was obvious when he fell asleep standing.
小题2:Many stars in the space are i_________ without a telescope.
小题3:Parents always want their children to b_________ themselves in public places
小题4:-- Do you agree with me?
-- ________(肯定的), I can’t agree more.
小题5:It is difficult to p________ his reaction because he is so moody.
小题6:Anyone who steals from the poor should be a________ of themselves
小题7:It was very ________ (体贴)of you to send me a gift on my birthday.
小题8:J. K. Rowling’s books ________ (吸引) to readers of all age, including parents and their kids.
小题9:In history people fought against _________(特权) in order to create a fairer society
小题10:________(原谅) me. I didn't mean to be impolite or rude.
读各大洲的降水、蒸发及径流量的对比图,回答:(10分)
(1) 衡量水资源丰歉的标准 , 其数值等于 量与 量之差。
(2)世界各大洲中江河径流总量最多的是 、其次是 最少的是 。
(3)上海所处的地理纬度虽然与许多缺水国家相近,但以水资源数量而言,上海并不缺水,这主要是由于上海地区受 环流的影响.然而上海现在却已成为水质型缺水城市。解决上海的水资源问题,现阶段可采取的措施有(多项选择)
A.大力发展海水淡化
B.大力开采地下水
C.防治水体污染,改善长江、太湖水的水质
D.节约用水,减少浪费