【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/002B049AEE8E3AC7BA8493EE83367B17.png style=vertical-align: middle;/>的定义域是
①
<img src=https://huaweicloudobs.ahjxjy.cn/489DDF7436D27D1DF001B410B15453DE.png style=vertical-align: middle;/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/3827B625965F84967F8DF065CA074D2F.png style=vertical-align: middle;/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/536F50916C0E35177E83764163536E1A.png style=vertical-align: middle;/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/A981EDE378696DDF1EB26848758F0859.png style=vertical-align: middle;/>
【单选题】
函数<img src=https://huaweicloudobs.ahjxjy.cn/4B71FF18B6B07E7C1077810AA5A93994.png title=BDVDF6Z26WZF62_RH]O3HYR.png alt=BDVDF6Z26WZF62_RH]O3HYR.png/>的定义域为( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/1BD32D58353487C4A35131055FFB452F.png title=GH03}VOLYT3O(Y930FI$2(9.png alt=GH03}VOLYT3O(Y930FI$2(9.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/F1A62D147DCCB3B36F375AF533FA60BC.png title=C01CC0X@D`07SV@IRS[J~TO.png alt=C01CC0X@D`07SV@IRS[J~TO.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/ED676A3B67DAD993F25F74E5D9DCF0C8.png title=~MWVK53}8L7%GA0YS@}(GE3.png alt=~MWVK53}8L7%GA0YS@}(GE3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/39DB3079B2FCD93B26D505F8E55A0236.png title=H{K14UO3`G2{%JP)8QQF(WA.png alt=H{K14UO3`G2{%JP)8QQF(WA.png/>