施工项目的安全检查应由（）组织，定期检查。
A. 业主
B. 建设单位
C. 项目经
D. 部门经理
You are on an ice-reinforced vessel about to enter packice. You should（）.
A. enter the pack on the windward side where there is a well defined ice edge
B. trim to an even keel or slightly down by the bow to take maximum benefit of the ice reinforcement
C. take maximum advantage of coastal leads caused by offshore winds
D. look for areas of rotten ice and enter perpendicular to the ice edge
A flashing green light displayed at a single lock means that the lock is（）.
A. ready for entrance
B. ready for entrance，but gates cannot be closed completely
C. being made ready for entrance
D. not ready for entrance
微信支付 
支付宝支付