消化道出血（）
A.粘液、脓血便
B.稀糊状便
C.米泔样便
D.白陶土样便
E.柏油样便
参考答案：E
After hospitals buy expensive equipment, they must try to ________ the money they have spent.
A．recover
B．reduce
C．remove
D．receive
颅骨骨折的正确分型为
A．线样骨折、凹陷骨折、压缩性骨折B．线样骨折、粉碎性骨折C．凹陷骨折、粉碎性骨折、穿入骨折D．撕脱骨折、穿入骨折E．线样骨折、凹陷骨折、粉碎性骨折、穿入骨折
