由于压缩空气压力高、气量大,装置停车后用压缩空气置换可加快速度。A.正确B.错误 由于压缩空气压力高、气量大,装置停车后用压缩空气置换可加快速度。A.正确B.错误 分类:历史学 题型:名词解释 查看答案
当气压信号增大时,阀门开度关小的调节阀属于()调节阀。A.气开式B.气关式C.正作用D.反作用 当气压信号增大时,阀门开度关小的调节阀属于()调节阀。A.气开式B.气关式C.正作用D.反作用 分类:历史学 题型:名词解释 查看答案
It was _______ who helped Tom out when he was in trouble. A.IB.meC.usD It was _______ who helped Tom out when he was in trouble. A.IB.meC.usD.ours 分类:历史学 题型:名词解释 查看答案
I remember _______ her at the party lastweek.A.to meetB.meetingC.havin I remember _______ her at the party lastweek.A.to meetB.meetingC.having metD.to have met 分类:历史学 题型:名词解释 查看答案
“Would you be_________do it for me,please?”“Ofcourse,withpleasurE.”A.k “Would you be_________do it for me,please?”“Ofcourse,withpleasurE.”A.kind enoughB.as kind toC.SO kind as toD.so kind to 分类:历史学 题型:名词解释 查看答案