π |
6 |
1 |
2 |
π |
2 |
π |
2 |
1 |
2 |
A.4 | B.3 | C.2 | D.1 |
π |
6 |
1 |
2 |
5π |
6 |
π |
6 |
1 |
2 |
π |
2 |
π |
2 |
2 |
π |
4 |
π |
2 |
π |
4 |
π |
4 |
π |
2 |
2 |
π |
4 |
2 |
A.∀x∈R,x2-1=0 | B.∃x∈Z,3x-1=0 |
C.∀x∈R,x2+1>0 | D.∃x∈Z,1<4x<3 |
1 |
2 |
A.若m,n,l所成的角相等,则m∥n |
B.若α∥β,m⊂α,则m∥β |
C.若m,n与α所成的角相等,则m∥n |
D.若γ与平面α,β所成的角相等,则α∥β |
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