This project requires close teamwork. _______Will be achieved unless we work well together.

A．Nothing

B．Anything

C．Something

D．Everything

受扭的素混凝土构件，一旦出现斜裂缝即完全破坏。若配置适量的受扭纵筋和受扭箍筋，则不但其承载力有较显著的提高，且构件破坏时会具有较好的延性。