在比赛中,检查点间最合适的距离应设计在()米之间。
A.200—500
B.500—1000
C.1000—1500
D.1500—2000
参考答案:B
浅埋暗挖法常用的预加固和预支护方法有()。
A.开挖面深孔注浆
B.超前小导管注浆
C.钢拱锚喷混凝土预支护
D.管棚超前支护
E.锁脚锚杆注浆
Did you buy ______for your parents?
A.something special
B.anything special.
C.special something
D.special anything