a |
b |
a |
b |
a |
b |
a |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
1 |
2 |
a |
b |
(
|
|
16+4-8 |
3 |
a |
a |
b |
| ||||||
|
|
| ||||||
4×2
|
16-4 | ||
8
|
| ||
2 |
π |
6 |
a |
b |
a |
b |
a |
b |
A.
| B.
| C.
| D.
|
α |
| ||
|
|
| ||
|
|
β |
| ||
|
| ||
|
|
| ||
|
|
α |
β |
a |
b |
a |
b |
a |
b |
a |
A.30° | B.60° | C.120° | D.150° |
a |
b |
a |
b |
a |
b |
b |
b |
a |
b |
A.30° | B.45° | C.60° | D.120° |
a |
b |
a |
b |
2 |
3 |
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