第7题: [单项选择]悬垂型杆塔(不含大跨越悬垂型杆塔)的断线情况,应计算下列哪种荷载组合?() A. 单回路杆塔,单导线断任意一相导线,地线未断 B. 单回路杆塔,单导线断任意一相导线,断任意一根地线 C. 双回路杆塔,同一档内,单导线断任意一相导线,地线未断 D. 多回路杆塔,同一档内,单导线断任意两相导线 参考答案:A
第14题: [填空题]S2. How do teenagers find their boyfriends or girlfriends according to the passage 参考答案:They date within their academic and social circles. 答案解析:[解析]细节题。依据是第二段第二句Teenagers begin dating in high school and usually find mates through their academic