男性，67岁，既往有进行性排尿困难多年，就诊前因饮酒后不能排尿，体检发现膀胱区明显膨隆。该患者最可能的诊断是（） 前列腺增生症。 前列腺癌。 膀胱肿瘤。 膀胱结石。 尿道狭窄。
The ability to stack switches using cisco stackwise technology provides A number of important benefits to the customer, which of these is A benefit of cisco stackwise?（） allows multiple switches to be managed as A single device.。 eliminates the need to purchasesmartnet on individual switches in the stack。 allowscisco smart switches to be incorporated into the stack。 enables switches in multiplewring closets to provide failover for each other。
相关系数等于-1意味着（） 两种证券之间具有完全正相关性。 两种证券之间相关性稍差。 两种证券之间风险可以完全对消。 两种证券组合的风险很大。
On a cisco aironet 802.11 a/b/g wireless lan client adapter， the status led and activity led are alternating on and off. What does this indicate？（） the client card is not associated to the network.。 the client card has awakened from power-save mode.。 the driver has been installed incorrectly.。 the client card has failed.。
简述不良资产产生的主要原因。
由滩顶至尾矿库内滩面水边线的水平距离叫作（）。
