搜题请搜索小程序“爱下问搜题”
问题 选择题

读我国东部某地区示意图，判断下列说法正确的是

[ ]

A．①省著名铁矿是攀枝花铁矿

B．②省著名油田是大庆油田

C．③省有丰富的煤炭资源

D．④省的省会是我国重要的毛纺织工业基地

答案

C

选择题
They became friends again that day. Until then, they _____ to each other for nearly two years.

A. didn't speak
B. hadn't spoken
C. haven't spoken
D. haven't been speaking
查看答案
单项选择题

在故障情况下，当变压器过负荷倍数为1.3倍时，过负荷时间最长为（）

A.80min

B.45min

C.120min
查看答案