空肠大面积出血性炎症患者,行肠系膜上动脉选择性插管灌注加压素后,较为常见的并发症是()
A.痉挛性腹痛
B.心肌梗死
C.高血压
D.肠缺血坏死
E.外周血管缺血
参考答案:A
(2013·陕西,16)________ is often the case with children,Amy was better by the time the doctor arrived.
A.It
B.That
C.What
D.As
下列选项不为评价网络性能指标的是()
A.连通性
B.吞吐量
C.带宽
D.没有什么指标