互联网对医疗卫生事业发展的影响可概括为4C,不包括()
A.content
B.connection
C.communication
D.commerce
E.care
参考答案:C
大量出汗时尿量减少,主要是由于
A.血浆晶体渗透压升高,引起血管升压素分泌
B.血浆晶体渗透压降低,引起血管升压素分泌
C.交感神经兴奋,引起血管升压素分泌
D.血容量减少,导致肾小球滤过减少
E.血浆胶体渗透压升高,导致肾小球滤过减少
A ladder 25 feet long is leaning against a wall that is perpendicular to level ground. The bottom of the ladder is 7 feet from the base of the wall. If the top of the ladder slips down 4 feet, how many feet will the bottom of the ladder slip ?()
A.4
B.5
C.8
D.9
E.15