【单选题】
选择正确的第三视图()<br /> <img src="https://nimg.ppkao.com/2018-09/wangjing/2018092013372375439.jpg?sign=5c4ac51dfea3bf95f6a9d5d0a8d5bf8e&t=62d46939" /><br /> <img src="https://nimg.ppkao.com/2018-09/wangjing/2018092013373496296.jpg?sign=67c228fe28144eb4506cdbe21777d914&t=62d46939" />
A、A
B、B
C、C
D、D