第三节(5分)听取信息,正确填写。
|
Place |
The Highland
Hotel |
|
General
Description |
(16)___________
and well organized |
|
Rooms |
Not very(17)
_______ but well furnished There’s a sauna. |
|
Facilities |
No swimming pool A beauty salon A bar on the(18) ___________ floor. |
|
(19) ___________ |
Quick checking in
and out Good wait staff |
|
Others |
Reservation
needed Offers a discount at (20)____________. |
15.给定集合
,
.若
是
的映射,且满足:
(1)任取
若
,则
;
(2)任取
若
,则有![]()
.
则称映射
为
的一个“优映射”.
例如:用表1表示的映射
:
是一个“优映射”.
表1 表2
|
|
1 |
2 |
3 |
|
|
2 |
3 |
1 |
|
|
1 |
2 |
3 |
4 |
|
|
|
3 |
|
|
(1)已知
:
是一个“优映射”,请把表2补充完整(只需填出一个满足条件的映射);
(2)若
:
是“优映射”, 且
,则
的最大值为
.