下面的投影图中表示交错直线的是（） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/abd70ceaf2b1417f8db7dcbdafe06a4e.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/69c37bc573b34b00829846f0d05b1b8e.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/467d9b64267e4a99928004e28e8ce78f.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/ab49baad1d7f4b4bbfd286c3225870bb.png" />

下列函数中，在复平面上为解析函数的是( ). A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/3f0b6fb48fce4383ad5b3ab4b8f9b85c.png"> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/636eb9bb3ce04a3fbc7427723f28c6ba.png"> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/47f094504d954232985bd754c9e7e936.png"> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/3a85c12341aa48aaa2990250bcbe235b.png">

http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/2bbf6c847a7f44cfa48e4e13438340ba.png

http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/ae6c872eb36d4c7cafad2082db629c9e.png

http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/8b52c3ef3f0e4992b6a19dc2b591a707.png