High boots were the______for women last year.
A.vulgar
B.vintage
C.vogue
D.vague
参考答案:C
二尖瓣狭窄时左房失代偿期的瓣口面积为:()
A.<1.5 cm2
B.>2 cm2
C.>3 cm2
D.>4 cm2
E.>6 cm2
下列杠杆工具中,不省力的是( )
A.铡刀
B.镊子
C.剪铁皮的剪刀
D.扳手