单选题We must grease and clean the derrick parts.（）A我们必须给吊杆部件上大黄油并清洗。B我们必须马上给吊杆部件上大黄油并清洗。C我们应该给吊杆上大黄油并清洗。D我们不用给吊杆部件上大黄油并清洗。
单选题
We must grease and clean the derrick parts.（）
A
我们必须给吊杆部件上大黄油并清洗。
B
我们必须马上给吊杆部件上大黄油并清洗。
C
我们应该给吊杆上大黄油并清洗。
D
我们不用给吊杆部件上大黄油并清洗。
参考解析
解析：
暂无解析
相关考题：
We believe we must increase our export sales if we want to continue to grow, and we hope to increase exports to 40 % of production.
2． The clean-up．day is only two weeks _______ now，so we must action quickly．A． fromB． sinceC． toD． for
Dirty oil must be ______before being used again .A.mixed with clean oilB.purifiedC.heatedD.strained
The derrick to be laid down on deck，cargo blocks，span tackles，guide rollers and all moving parts of derrick to be dismantled，cleaned and greased with special grease．This sentence is most possibly found in ________．A.Chief Mate's remark on stowage planB.Store list made by Chief EngineerC.Collision Report made by MasterD.Repair List
All the holds to be loaded with grain must be swept ______ commencement of loading．A.Cleanly/duringB.Clear/meanwhileC.Clean/betweenD.Clean/prior to
What drives us is our mission to acelerate the world' s transition to sustainable, clean energy ,but we will never achieve that missionwe______we eventually demonstrate that we can be sustainably profitable.A、untilB、unlessC、ifD、through
我们经常保养甲板机械。（）A、We often maintain deck machinery.B、We often repair deck machinery.C、We often clean and paint deck.D、We often adjust deck machinery.
We must grease and clean the derrick parts.（）A、我们必须给吊杆部件上大黄油并清洗。B、我们必须马上给吊杆部件上大黄油并清洗。C、我们应该给吊杆上大黄油并清洗。D、我们不用给吊杆部件上大黄油并清洗。
吊杆停用时，稳索必须要收起来。（）A、When the derrick is stopped, the guy must be stowed.B、When the derrick is stopped, the guy must be topped.C、When the derrick is stopped, the guy must be lowered.D、When the guy is stopped, the derrick must be stowed.
We sailors must take care of all of the cargo handling gears and parts.（）A、水手必须修理所有的装卸货设备。B、我们水手必须照管所有的货物和零部件。C、我们水手必须保养所有的装卸货设备和零部件。D、我们水手必须修理所有的装卸货设备和零部件。
单选题Before the operation of the derrick, check all （）(索具)closely and everything must be in good condition.AblocksBgoosenecksCtackleDguys
单选题We have our house（）every week by a cleaner.AcleanBcleanedCcleaningDto clean