为了消除渐变焦镜片前表面的渐变棱镜效应,通常是在镜片后表面补偿()的棱镜。
A. 底向下
B. 底向上
C. 底向内
D. 底向外
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根据债券的发行是否采用公开发行方式进行分类,可分为公募债券和私募债券。()
A. 正确
B. 错误
游戏治疗中,把游戏作为一种直接的语言替代物,其目的不是让儿童通过游戏()。
A. 打破自我封闭
B. 进行精神发泄
C. “玩”出其问题
D. 说出其问题
hostname Switch1 interface Vlan10 ip address 172.16.10.32 255.255.255.0 no ip redirects standby 1 ip 172.16.10.110 standby 1 timers 1 5 standby 1 priority 130 hostname Switch2 interface Vlan10 ip address 172.16.10.33 255.255.255.0 no ip redirects standby 1 ip 172.16.10.110 standby 1 timers 1 5 standby 1 priority 120 HSRP was implemented and configured on two switches while scheduled network maintenance was performed. After the two switches have finished rebooting, you notice via show commands that Switch2 is the HSRP active router. Which two items are most likely the cause of Switch1 not becoming the active router? ()
A. premption is disabled
B. standby group number does not match VLAN number
C. IP addressing is incorrect
D. IP redirect is disabled
E. incorrect standby timers
F. booting delay
荧光颜料是如何产生荧光的?荧光颜料分几类?各有什么特点?