问题
填空题
摩擦后表面的白层组织是由于（）、（）和（）三种效应所致。
答案
参考答案：塑性流动；急冷急热；表面反应
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摩擦后表面的白层组织是由于（）、（）和（）三种效应所致。
参考答案：塑性流动；急冷急热；表面反应
| 完形填空 | |||
| Several years ago, a farmer owned some land along the sea. He advertised(征聘) for workers, but no one wanted to work for him. Most people didn't want to work there 1 they didn't like the bad storms. Finally, a 2 man, who looked weak and more than fifty years old, came to see the farmer. "Are you a good farmhand?" the farmer asked him. "Well, I 3 sleep well when the wind blows." answered the little man. Although the answer was strange, the farmer let the man stay to work. The little man worked 4 around the farm, busy from morning till evening. The farmer felt very pleased with his work. Then one night the wind began to blow strongly. Jumping out of the bed, the farmer 5 into the little man's room. He shook the little man and cried, "Get up! A 6 is coming!" The little man said slowly, "No sir, I told you-I can ____37___ well when the wind blows." The farmer was very angry, but he had to hurry outside to get ready for the storm. To his 8 , everything was ready outside. 9 could be blown away. The farmer 10 what the man meant, so he returned to his bed to sleep while the wind was still blowing. | |||
| ( )1. A. so ( )2. A. big ( )3. A. can ( )4. A. well ( )5. A. walked ( )6. A. man ( )7. A. work ( )8. A. anger ( )9. A. Everything ( )10.A. understood | B. but B. little B. must B. badly B. rushed B. dog B. play B. pride B. Something B. preferred | C. because C. young C. need C. loudly C. moved C. ship C. sleep C. surprise C. Anything C. heard | D. although D. strong D. should D. clearly D. drove D. storm D. listen D. confidence D. Nothing D. did |