题目内容
杆件在轴向拉压时最大正应力发生在横截面上
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构件失效时的极限应力是材料的强度极限
5 Complete the paragraph with the correct form of the words below.applianceassemblecoarsedevicefurnishinstalllodgerecallLooking back, I can still (1) ________ the day when the workmen arrived. The (2) ________ was in a poor state of repair. They began by (3) ________ electricity and then (4) _________ the various pieces of a modern kitchen with all the best (5) ________ such as a washing machine and refrigerator.The walls were rather (6) ________ after years of neglect, so they used a(n) (7) ________ to make them smooth again. Finally, they (8) ________ the house with tables, chairs, sofas and beds, until it was as comfortable as it used to be.
6 Replace the underlined words with the correct form of the words below.blossomcrossroadsdecayfaintidenticalresentvanish1 The two buildings looked exactly the same from the outside, but were very different inside.2 When spring arrives the garden is full of flowers on the trees.3 She felt suddenly unconscious for a short time when she heard the dreadful news.4 At the place where two or more roads meet, there are often queues of traffic.5 Every morning, the owner would mysteriously disappear, and I’d have no idea when he’d gone.6 I sometimes feel unhappy and angry at the noise and traffic, but most of the time I ignore them.7 When you leave apples on the ground, they are gradually destroyed by a natural process, and can’t be collected and stored.
1 Is a clearing likely to be an area of woodland?
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