问题
单项选择题
下列材料中，一般用体积吸水率表示其吸水性的是( )。
A．塑料泡沫
B．加气混凝土砌块
C．普通黏土砖
D．钢纤维混凝土
答案
参考答案：A
解析：轻质材料(如海绵、塑料泡沫等)，可吸收水分的质量远大于干燥材料的质量，其吸水率一般要用体积吸水率来表示。
搜题请搜索小程序“爱下问搜题”
下列材料中，一般用体积吸水率表示其吸水性的是( )。
A．塑料泡沫
B．加气混凝土砌块
C．普通黏土砖
D．钢纤维混凝土
参考答案：A
解析：轻质材料(如海绵、塑料泡沫等)，可吸收水分的质量远大于干燥材料的质量，其吸水率一般要用体积吸水率来表示。
| 完形填空。 | |||
| Taiwan is in the 1 _ of China. It is the 2 island in China. It has an area of about 36,000 3 _ and it has a 4 0f over 22,000,000. Taiwan is rich in 5 resources and is famous for its bananas, rice, tea a'nd so on all over the world. Its scenery is so beautiful and the weather is.so pleasant that a lot of travelers come for a 6 . Taiwan 7 part of China since ancient times. Most people of the island come from Fujian and Guangdong. The people on both 8 of the straits (海峡) have a 9 wish to unite our_ 10 . | |||
| ( )1. A. southeastern ( )2. A. first ( )3. A. square ( )4. A, popular ( )5. A. nature ( )6. A. see ( )7. A. has been ( )8. A. side ( )9. A. strong ( )10. A. mainland | B. southeast B. larger B. square meters B. population B. natural B. sight B. is B. beaches B. high B. motherland | C. southwest C. largest C. square kilometers C. people C. man-made C. visit C. was C. sides C. highly C. mother town | |