普通烧结砖的强度等级是由抗压强度等级来控制的。()
间隔式基础大放脚每两皮砖放出 1/4 砖与每皮砖放出 1/4 砖相间隔。()
What problem did they have last year？
A. Children didn"t like the activities.
B. Few children attended the course.
C. They didn"t have enough workers.
D. They could do nothing on rainy days.
Which of the following statements is INCORRECT？
A. The man and the woman are very busy.
B. The man and the woman like sports.
C. The man and the woman prefer the old equipment in the gym.
D. The man and the woman are free on Sunday.
微信支付 
支付宝支付