unit one
sectionⅰ:text
sectionⅱ:method and technique
sectionⅲ:exercises
unit two
sectionⅰ:text
sectionⅱ:method and technique
sectionⅲ:exercises
unit three
sectionⅰ:text
sectionⅱ:method and technique
sectionⅲ:exercises
unit four
sectionⅰ:text 44some contractterms forworks ofcivilengineering construction
sectionⅱ:method and technique
sectionⅲ:exercises
unit five
sectionⅰ:text
sectionⅱ:method and technique
sectionⅲ:exercises
unit six
sectionⅰ:text
sectionⅱ:method and technique
sectionⅲ:exercises
unit seven
sectionⅰ:text
sectionⅱ:method and technique
sectionⅲ:exercises
unit eight
sectionⅰ:text
sectionⅱ:method and technique
sectionⅲ:exercises
unit nine
sectionⅰ:text
sectionⅱ:method and technique
sectionⅲ:exercises
unit ten
sectionⅰ:text
sectionⅱ:method&n