问题
路侧护栏最小设置长度为____m.A.50 B.60 C.70 D.80
路侧护栏最小设置长度为____m.
A.50
B.60
C.70
D.80
请帮忙给出正确答案和分析,谢谢!
Fatal error: Uncaught [XSException] ../../../usr/local/xunsearch/sdk/php/lib/XS.php(2559): Connection refused(C#111, localhost:8384)
thrown in /usr/local/xunsearch/sdk/php/lib/XS.php on line 2559