临床资料:男性, 48 岁,常规体检。超声综合描述:左肾集合系统中部可见 2.5cm×1. 9cm低回声区,形态不规则; CDFI:内见少许动、静脉血流信号。见 彩图。超声提示
A
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Hardlyhadhefinishedhisspeech________theaudiencestartedcheering.
若则
(1)求f(x)
(2)
曲线,渐近线的条数为()
Hiswifehasbeen_______alotofpressureonhimtochangehisjob.
设函数f(x)=ln(3x),则'f(2)=()