1 |
2 |
1 |
2 |
1 |
3 |
1 |
2 |
π |
4 |
nπr2 |
2π |
tan(α+β)+tanβ |
1-tan(α+β)tanβ |
π |
4 |
BC |
sinA |
AC |
sinB |
a2+b2-c2 |
2ab |
A.每个偶函数的图象都与y轴相交 |
B.∀x∈R,x2>0 |
C.存在一条直线与两个相交平面都垂直 |
D.∃x0∈R,x02≤0 |
A.若z2≥0,则z是实数 | B.若z2<0,则z是虚数 |
C.若z是虚数,则z2≥0 | D.若z是纯虚数,则z2<0 |
a |
a |
0 |
a |
b |
c |
a |
b |
c |
b |
c |
a |
b |
c |
b |
c |
a |
b |
c |
b |
c |
a |
b |
c |
b |
c |
a |
A.1 | B.2 | C.3 | D.4 |
© 2017-2019 超级试练试题库,All Rights Reserved.