【单选题】关于基坑开挖预留土层的说法,正确的是( )。
A.
人工挖土不能立即进行下道工序时,保留土层厚度为10~15cm
B.
机械开挖在基底标高以上预留一层结合人工挖掘修整
C.
使用铲运机、推土机时,保留土层厚度为20~30cm
D.
使用正铲、反铲或拉铲挖土时,保留土层厚度为30~40cm
【单选题】Which group of mice is the healthiest among the 3 groups after 3 years?
【简答题】Task 3 Directions: The following is a passage. After reading it, you are required to complete the outline in the table below (No. 46 through 50). You should write your answers briefly (in no more than...
【判断题】如用机械挖土,为防止基底土被扰动,不应直接挖到坑底, 使用铲运机、推土机时,保留土层厚度为 150~200mm 。 ( )
【简答题】Task 3 Directions: The following is a passage. After reading it, you are required to complete the outline in the table below (No. 46 through 50). You should write your answers briefly (in no more than...
【简答题】Task 3 Directions: The following is a passage. After reading it, you are required to complete the outline in the table below (No. 46 through 50). You should write your answers briefly (in no more than...
【简答题】After the attacks, the group which is the most anxious to help with the healing process is____________.
【判断题】由分散质粒径的大小即可判断分散系的类型。
【单选题】关于基坑开挖预留土层的说法,正确的是
A.
人工挖土不能立即进行下道工序时,保留土层厚度为10~15cm
B.
机械开挖在基底标高以上预留一层结合人工挖掘修整
C.
试用铲运机、推土机时,保留土层厚度为20~30cm
D.
使用正铲、反铲或拉铲挖土时,保留土层厚度为30~40cm