铁架塔、建筑用脚手架属于框架结构，其受力特点是（）

A.主要竖向重力荷载

B.主要水平方向的荷载

C.既能承受竖向重力荷载，又能承受水平方向的荷载

D.不能承受太大荷载

The master shall ensure that any seafarers（）are provided with an adequate period of rest.

A.who have performed work for 14 hours

B.who have performed work in a scheduled rest period

C.who have performed work in a scheduled work period

D.who works hard