顺列管的传热系数要比错列管的传热系数大。
参考答案：错
When you read, don't every new word in the dictionary. Try to guess its meaning.
A. lookup B. work out C. give up
起升机构的钢丝绳的润滑应用（）；
A、钙基润滑
B、30号齿轮油
C、合成石墨钙基润滑脂
D、起重机安全作业
