防渗墙墙体质量检查应在成墙( )d后进行。
【单选题】
Which of the following grammar activities is most communicative?
A.
Asking the students to read and correct the mistakes in the sentences.
B.
Asking the students to tell the differences between two pictures in groups.
C.
Asking the students to make sentences with the given words.
D.
Asking the students to complete the translation exercises.
参考答案
参考解析
【单选题】
汽车客运站作业流线组织的好坏,直接影响到客运站内、外部交通和生产安全及运行效率。下列流线组织原则错误的是( )。
站内不同流线不能交叉
车站进出口须距离十字路口至少50m
车辆入口应位于出口上游
各种流线应简捷、通畅、不迂回,尽量使各种流线最短