患者，男，29岁，出现恶心呕吐，呕吐物较多带粪臭味，该患者可能是
A．胃潴留
B．肠梗阻
C．尿毒症
D．中毒
E．幽门梗阻
参考答案：B
____ 202 km Shanghai-Hangzhou high-speed railway, with ____ design speed of 350 km per hour, began
its operation on Oct 26, 2010.[ ]
A. The; a
B. The; the
C. A; a
D. A; the
看火孔压力应保持在（）。
A、-5—0Pa
B、0—5Pa
C、5—10Pa
D、10Pa以上
