Let’s ________ together. [ ]
A. go to home
B. to go to home
C. go home
D. to go home
答案:C
—Where is your pen? — .[ ]
A. On desk
B. On the desk
C. At school
对于新材料、新工艺、新结构形式的结构构件和跨度较大的屋架、桁架等结构构件,在使用状态短期试验荷载作用下的持续时间不宜少于()
A.24h
B.18h
C.12h
D.30min