有一条采用BV、380V/220V的TN-C线路,计算电流为50A,环温为30℃,cosα=0.6。 要求:
按发热条件选择此线路的导线截面。
参考答案:BV-3×25
同一存款客户只能在银行开立一个一般存款账户。 ( )
— How about walking home instead of taking a bus, Tom?
— Er …… I think walking home does better to us, but it takes half an hour _____. [ ]
A. so longer
B. as longer
C. so long
D. as long