尼罗河上游有两大支流分别是白尼罗河和什么？
参考答案：尼罗河上游有两大支流分别是白尼罗河和青尼罗河。
They were pretty poor but most of their friends were even .
A．richer
B．badly off
C．worse off
D．well off
根据《国际船舶和港口设施保安规则》规定，船舶应对哪些通道予以控制。（）
A.梯子通道、舷梯
B.跳板
C.门、舷窗、窗及舷门
D.系泊绳和锚链
E.克令吊和升降装置
