(Ⅱ)求证:CF⊥平面BDE;
(Ⅱ)求证:CF⊥平面BDE;
相关考题:
如图,三棱柱ABC-A1B1C1,M,N分别为AB,B1C1的中点, (1)求证MN∥平面AA1C1C; (2)若C1C=CB1,CA=CB,平面CC1B1B⊥平面ABC,求证:AB⊥平面CMN。
设有如下规则: R1:IF E1 THEN H {cf1 0.9} R2: IF E2 THEN H {cf2 0.6} R3: IF E3 THEN H {cf3 -0.5} R4: IF E4∩(E5∪E6) THEN E1 {cf4 0.8} 已知:cf(E2)=0.8,cf(E3)=0.6,cf(E4)=0.5,cf(E5)=0.6,cf(E6)=0.8求:cf(H).
【单选题】给交换机配置安全MAC地址:0006.1bde.13b4。A.switchport port-security mac-address 0006.1bde.13b4#B.switchport port-security 0006.1bde.13b4#C.switchport 0006.1bde.13b4#D.switchport port-security mac-address 0006.1bde.13b4 ip-address 192.168.12.202