在定量泵供压系统中,哪个附件在工作部分不工作时,让油液返回油箱并使泵的消耗功率最大()?
A.安全活门。
B.卸荷活门。
C.换向活门。
D.减压活门。
参考答案:A
Read and choose. 给下列问句选合适的答语。
( ) 1. What time is it?
( ) 2. How's the weather today?
( ) 3.What day is the first day of the week?
( ) 4. What's the date?
( ) 5. When is Spring Festival?
A. It's September fifth.
B. It's eight o'clock.
C. Sunday.
D. It's sunny.
E. It's in January or February.
下列数据不是全网邻区自动优化工具输出结果的是:()
A.邻区增删建议
B.邻区黑/白名单
C.切换指标TOPN差小区对
D.疑似过覆盖小区列表