_____ is an English student. _____ Name is Tina.[ ]
A. He; His
B. She; Her
C. He; Her
答案:B
采用吊罐运送混凝土时,()应符合安全要求,连接牢固。
A.吊罐
B.钢丝绳
C.吊钩
D.吊扣
对较宽、较浅的裂缝进行自流灌浆时,需先沿缝口开挖()。
A.方坑
B.沟槽
C.竖井
D.灌孔