按照现行规定，施工管理用车辆的保险费属于（）。 ["工程保险费","企业管理费","间接费","财产保险费"]
下列有关β值的说法不正确的是：（） ["β值衡量的是非系统风险","证券组合相对于其自身的值为0","β值越大的证券，预期收益也越大","无风险证券的值为1"]
男性，62岁，先是夜间尿频，后逐步排尿时间延长，排尿时淋漓不尽。今下午排不出尿，小腹胀痛来院就诊。护士首先应如何处理（） ["膀胱穿刺抽尿","膀胱造瘘","导尿并留置导尿管","压腹部排尿","急诊做前列腺摘除术"]
如何对学习动机缺乏心理进行自我调适？
Cisco.com offers account managers which three of these resources？ （） [" customer issue narratives"," training and events"," ordering information"," products and services informatio"]
简述鱼鳔的结构和功能。
