问题
单项选择题
当被测流体的绝对压力（）外界大气压力时，所用的测压仪表称为真空表。
A.大于
B.小于
C.等于
D.近似于
答案
参考答案：B
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当被测流体的绝对压力（）外界大气压力时，所用的测压仪表称为真空表。
A.大于
B.小于
C.等于
D.近似于
参考答案：B
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| A French student went to London for his holiday. He thought, " I know 1 English. I think people can understand 2 ." One day he went to a restaurant and sat down at the table. He wanted to 3 a cup of tea and some eggs. Soon the waiter came up to him and asked, " 4 ?" "A cup of tea and…." He could not remember the English word for eggs. He looked about but 5 was eating eggs. Then he saw a picture book on the table next to him. There was a picture of 6 on its cover (封面). He 7 the picture to the waiter. "What is the English for this?" He asked. "A cock (公鸡)" answered the waiter. " What do you call a cock's 8 " He asked again. "A hen." " What do you call a hen's 9 " "Chicks" " What do you call a chicks 10 they were born? "Eggs" "Very well," said the French student happily. " Give me two eggs and a cup of tea, please." Then he sat down with a smile on his face. | ||||
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