During the voyage he encountered boisterous winds and heavy weather during which time the
A. moved
B. labored
C. drived
D. went
查看答案
氢气串氮气管线后,应该对氮气管网进行放空、氮气置换。()
正常操作中应控制好加氢裂化冷高分界位,防止界位过高导致冷高分油带水,界位过低造成水带油。()
按TSGT7001-2009《电梯监督检验和定期检验规则—曳引与强制驱动电梯》规定,导轨安装完工后,检测其不直线度,每5m长应不大于()mm。
A. 1.0
B. 1.2
C. 1.5
D. 1.8
所有账户都分为左右两方。左边是增加方,右方是减少方。