导赤散的功用是（）
A.清心利水养阴
B.清心益气止淋
C.清热益气生津
D.凉血止血，利水通淋
E.清热凉血通淋
参考答案：A
血小板平均体积（）
A.RDW
B.MPV
C.HCT
D.MCH
E.MCHC
Even though the main source of________exposure for a majority of the human population is the sun, the artificial tanning from sun beds contributes significantly to the total UV risk.
A．extra violent
B．extra violet
C．ultraviolet
D．ultravirus
