楼梯或台阶的踏步中供行走时脚踩的水平的面叫()。
A.踢面
B.踏面
C.楼梯井
D.休息平台
参考答案:B
28.The moment she heard Mr. Baker’s angry voice on the phone, she ____what she would have to face.
A.had sensed
B.has sensed
C.sensed
D.would sense
TSP地质超前预报是()。
A.超前钻孔法
B.隧道地震波勘探法
C.地质雷达法
D.超前仪勘探法