骨折不愈合的治疗原则（）

A.延长管型石膏外固定的时间

B.小夹板固定

C.植骨加内固定，同时石膏外固定

D.内固定

E.以上都不是

The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire，（）the claimant proves that the fire arose from fault or neglect on the part of the carrier，his servants or agents.

A.should

B.shall

C.that

D.if