The holding power of an anchor increases when the（）.

A.amount of chain lying along the bottom increases

B.length of the catenary is reduced

C.mooring line tension is increased

D.amount of chain lying along the bottom decreases

某病人要做腰穿检查，有恐惧感。从医德要求考虑，临床医生应向病人做的主要工作是（）

A.要得到病人知情同意

B.告知做腰穿的必要性，嘱病人配合

C.告知做腰穿时应注意的事项

D.因诊断需要，先动员，后检查

E.动员家属做病人思想工作