切削时切削刃会受到很大的压力和冲击力,因此刀具必须具备足够的()。
A.硬度
B.强度和韧性
C.工艺性
D.耐磨性
参考答案:B
I am going to tell you an unbelievable story. This afternoon a __1___(poor) dressed gentleman came into my restaurant. Nobody knew who he was and __2___he came from. After __3___(sit) down, he ordered a lot of food. He stared at it and then _4___ (eat) it up very quickly.
To be_5___, we doubted whether the man was able to pay for the food. When he was asked to pay the bill, the gentleman asked if we would mind__6__ (wait) just a few minutes. Then we were _7___ (shock) to see that he took a million pound bank note. __8__(fortunate), we could not change the bank note as it was too large. So I gave this strange but very rich man a _9__ dinner, in the hope__10__he might come to our restaurant again.
亚洲东部和南部形成了典型的季风气候,主要是受[ ]
A.地势中部高、四周低的影响
B.海陆热力差异的影响
C.副热带高压带的影响
D.西风带的影响