安全专项评价可以归为( )。

A．安全预评价

B．安全现状评价

C．安全验收评价

D．安全系统评价

If absolutely necessary，the best way to land on a beach in a motor lifeboat is to（）.

A.run as fast as the boat will go and keep the sea on the stern

B.secure the engine，put sea anchor over the bow，put out the oars，use sweep oar and back onto beach

C.go in under oars and put out the sea painter

D.put the sea broadside and let the boat drift ashore