关于土工织物的孔径，下列说法正确的是：( ) A．是水力学特性的一项重要指标 B．反
题型：多项选择题
问题：
关于土工织物的孔径，下列说法正确的是：( )
A．是水力学特性的一项重要指标
B．反应土工织物的过滤性能
C．评价土工织物阻止土颗粒通过的能力
D．反应土工织物透水性
题型：多项选择题
It was a Saturday afternoon. Mr. Green was reading a newspaper. Suddenly he heard his wife 16 in the next room. He hurried to her and asked, "What happened to you. my dear?” “Oh, dear!” his wifecried out, "My head hurts! 17 a doctor. Hurry up!”Their two children were both 18  at that moment and something was wrong with the telephone. Mr. Green 19 go to a hospital himself. Bad luck! All the hospitals in the town were 20 that day. Mr. Green didn't know 21 . Just then his friend, Mr. Brown, saw him and asked. "What is 22 ?" Mr. Green told him everything. The man .said. "Why not turn to 23 ? He can help you." Mr. Green remembered his friend, Mr. Black was a good doctor. He hurried to Mr. Black's. When he got there, Mr. and Mr. Black were having their 24 meal . The doctor asked Mr. Green to drink with him.He was happy and sat 25. After that they began to chat. And when Mrs. Black asked, “How is you wife?”“She is fine, thanks…” Mr. Green stopped at once — he remembered his wife was waiting for a doctor at home. ^
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