气相色谱法测定环境空气和废气中挥发性卤代烃,当使用FID检测器时,()、()或辛烷做 发布时间:2018-03-18 07:51 │ 来源:www.tikuol.com 题型:填空题 问题: 气相色谱法测定环境空气和废气中挥发性卤代烃,当使用FID检测器时,()、()或辛烷做内标物。
题型:填空题 完形填空。 A French student went to London for his holiday. He thought,"I know 1 English. But I think people can understand me." One day he went to a hotel and sat down at a 2 . He wanted to 3 a cup of tea and some eggs. Soon the waiter came up to him and asked,"Can I help you?" "A cup of tea and..."He could not remember the 4 word for eggs. He looked 5 him, but nobody was eating eggs. Then he saw 6 on the table next to him. There was a picture of 7 on its cover (封面). He 8 the picture to the waiter."What is the English for this?" "A cock,"answered the waiter."What do you call a cock's wife?"he asked again."A hen.""And what do you call a cock's children?""Chicks.""And what do you call chicks 9 they are born (出生)?" "Eggs." "Very well," said the French student happily. "Bring me two 10 and a cup of tea, please."And he sat down with a smile on his face. ( )1. A. much ( )2. A table ( )3. A. drink ( )4. A. French ( )5. A. at ( )6. A. a story book( )7. A. a cock ( )8. A. read ( )9. A. when ( )10. A. hens B. a little B. door B. take B. Chinese B. for B. a picture bookB. a girl B. put B. before B. chicks C. more C. chair C. have C. En glish C. around C. a history book C. a child C. showed C. where C. eggs 查看答案
题型:填空题 The biggest whale is ___ blue whale, which grows to be about 29 meters long—the height of _____ 9-story building.A.the; theB.a; aC.a; theD.the; a 查看答案