答案:C
患者,女性,25岁,停经2月余, * * 不规则流血1周,血量不多,伴有腹胀。查体:轻度贫血貌,未闻及胎心音。为协助诊断首选下列哪项检查()
A.胸片
B.B超
C.CT
D.血HCG
E.尿HCG
WAN is the()to allow users to read from one Internet site to another and to explore the information available without acceptance of complicated commands and protocols.
A.internet system
B.information system
C.web browser
D.networks