A hospitalized client craves a drink while withdrawing from alcohol. Which of the following measures is the best way to help the client resist the urge to drink

A．A routine search of visitors.

B．A locked-door policy.

C．One-to-one supervision by the staff.

D．Support from other alcoholic clients.

在土地面积测算方法中，几何图形法和( )既适用于图上量算面积，也适用于实地量算面积。

A．坐标法
B．求积仪法
C．求积透明膜片法
D．面积法