When the derrick is topped, the guys must be ().
第1题:
起货机出故障时,水手要去叫电工来修理。()
第2题:
把吊杆甩向码头。()
第3题:
When the inert gas pressure is being ______ in the cargo tanks,particular attention should be paid to obtaining an oxygen concentration.
A.topped up
B.braced
C.tommed down
D.shored
第4题:
This ()was repaired in Singapore.
第5题:
请把吊杆甩到舱口上方好吗?()
第6题:
The ()is fixed at the bottom of the derrick.
第7题:
请修理一下受损吊杆。()
第8题:
The connected joints of pipe,usually made of three joints of pipe approximately 90 feet long,racked in the derrick when making a trip are called a ______.
A.String
B.Stand
C.Joint
D.Standpipe
第9题:
The ()(吊杆托架) supports the derrick.
第10题:
重吊杆用于吊大的重件。()