类推预测法是一种重要的趋势预测方法,下列关于类推预测法的说法,正确的有()。
A. 类推预测法可分为产品类、行业类和地区类推预测三种
B. 类推预测法不适用与新产品的需求预测
C. 地区类推预测法的类推结果存在必然性
D. 类推预测法具有极大的灵活性和广泛性
E. 数码相机的市场需求预测可以参照计算机和照相机的需求发展过程来推测生命周期发展
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螺杆式启闭机螺母的螺纹轴线与支承外圆的同轴度及平面垂直度应()GB/T1184要求。
A. 不低于
B. 不高于
C. 不满足
D. 满足
基金绩效衡量目的在于将具有优秀投资能力的基金经理(基金管理人)鉴别出来。()
A. 正确
B. 错误
Which three statements regarding Cisco ASAmulticast routing support are correct? ()
ASA supports both stubmulticast routing and PIMmulticast routing. However, you cannot configure bothconcurrently on a single security appliance
B. When configured for stubmulticast routing, the ASA can act as the Rendezvous Point (RP)
C. If the ASAdetects IGMPversion1 routers, the ASAwill automatically switch to IGMP version 1 operations.
D. The ASA supports both PIM-SM and bi-directional PIM
Enabling multicast routing globally on the ASA automatically enables PIM and IGMP on all interfaces
F. The ASA can be configured for IGMP snooping toconstrain theflooding of multicast traffic by dynamically configuring themulticast traffic to be forwarded only those interfaces associated with hosts requesting themulticast grou
60岁,男性,MRI示脑内多发异常信号且有明显环形增强,伴瘤周水肿,首先考虑()
A. 脑血管瘤
B. 急性播散性脑炎
C. 病毒性脑炎
D. 边缘性脑炎
E. 脑转移瘤