急性胰腺炎患者发热超过39℃，且持续不退者提示（）
A.出血坏死型
B.继发性腹膜炎
C.并发胰腺脓肿
D.并发胰腺蜂窝织炎
E.以上均有可能
参考答案：E
完成条件反射的神经中枢位于[ ]
A．大脑皮质
B．脑干
C．脊髓
D．小脑
It is NOT advisable to use nylon for alongside towing because it（）.
A.stretches too much
B.is too difficult to make fast
C.parts too readily
D.is too susceptible to mildew
