公共文化体育设施的建设选址，应当符合( )的原则。

A．人口集中、环境幽雅

B．人口集中、交通便利

C．安全、交通便利

D．实用、安全、科学、美观

An inflatable liferaft should be manually released from its cradle by（）.

A.cutting the straps that enclose the container

B.removing the rubber sealing strip from the container

C.loosening the turnbuckle on the securing strap

D.pushing the button on the hydrostatic release