岩石中所含的油的体积与岩石孔隙体积的百分比叫（）

A.饱和度

B.孔隙度

C.含油饱和度

D.含油度

The nurse is caring for a client with a fractured hip. The client is combative and confused, and he's trying to get out of bed. The nurse should （）.

A．leave the client and get help.

B．obtain a physician's order to restrain the client.

C．read the facility's policy on restraints.

D．order soft restraints from the storeroom.