欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

(1)=________；

(2)=________.

A.<<                                                 B.<<

C.<<                                                 D.<<

A.－                                                            B.

C.                                                              D.

A.x>0，y>0                                                     B.x>0，y<0

C.x<0，y>0                                                     D.x<0，y<0

①當(dāng)a<0時(shí)，  ②=|a|  ③函數(shù)y=的定義域是(2，+∞)  ④若100^a=5，10^b=2，則2a+b=1

A.0                          B.1                          C.2                          D.3

(1)=________；(2)=________.

(1)=________；(2)()=________；(3)=________.

A.2或－2                                                        B.－2

C.                                                             D.2

A.

B.

C.［－5+3()⁰］^－2=－

D.

A.1                                                             B.2     

C.3                                                             D.4