问题
单项选择题
下列四种说法，哪种不正确？（）
A、复合材料在民用运输机上主要用来制造只承受局部气动载荷的维形构件，或只承受传递局部气动载荷的次要受力构件。
B、用蜂窝夹层结构制成的部件之间的连接设计比较容易
C、在蜂窝夹层结构制成的部件上进行大开口设计比较困难
D、抗湿热环境的能力差，要特别注意防潮密封
答案
参考答案：B
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下列四种说法，哪种不正确？（）
A、复合材料在民用运输机上主要用来制造只承受局部气动载荷的维形构件，或只承受传递局部气动载荷的次要受力构件。
B、用蜂窝夹层结构制成的部件之间的连接设计比较容易
C、在蜂窝夹层结构制成的部件上进行大开口设计比较困难
D、抗湿热环境的能力差，要特别注意防潮密封
参考答案：B
| 完形填空. 先通读短文,掌握其大意,然后从 A、B、C、D 四个选项中选出一个可以填入相应空白处的最佳答案. | |||
| Long ago , in a small village of Wakefield lived two farmers,Harry and Peter. Harry was very hard-working while Peter was 1 .Every day Harry got up early and came home late, but Peter walked around for fun. One summer there was no 2 and the crops(庄稼)were dying. Harry thought,"I must do something to save these crops , or they shall die. "With this 3 in mind, he went out to find a river so that he could dig a canal(沟渠)to his field. He walked on and on,feeling tired and thirsty. After a 4 search, he found a river lull of blue water. He was very happy. He started digging a canal to his field. 5 it was noon his wife sent their daughter to bring Harry home 6 lunch. But Harry did not go. He did not want to leave his work unfinished. He completed his work, 7 at night. He was very satisfied. He went home, had a good meal and 8 into a sound sleep. Peter did the same. But he was not at all determined(有决心的). He also 9 digging a canal to his field but he didn't have his work completed. His field did not get 10 water and all his crops died. Harry's field would be watered when needed. He had a good harvest because of his hard work. | |||
| ( ) 1. A. cruel ( ) 2. A. rain ( ) 3. A. feeling ( ) 4. A. quick ( ) 5. A. Whether ( ) 6. A. for ( ) 7. A. early ( ) 8. A. fell ( ) 9. A. stopped ( )10.A. clean | B. lazy B. wind B. dream B. long B. Although B. to B. far B. looked B. loved B. enough | C. careless C. cloud C. problem C. slow C. When C. with C. late C. turned C. forgot C. little | D. silly D. river D. thought D. special D. Unless D. at D. deep D. walked D. started D. fresh |