单项选择题
A.a request for assistance B.the location of the unit at the time of the casualty C.an estimate of the cost to repair damages D.the amount of fuel remaining
The Loran needs（）.A.repairingB.to repairC.repairsD.have...
单项选择题The Loran needs（）.
A.repairing B.to repair C.repairs D.have repaired
The equipment is very old．It’s not worth（）.A.repairingB...
单项选择题The equipment is very old．It’s not worth（）.
A.repairing B.to repair C.repair D.to be repaired
The deck control valve to be（）after being repaired.A.mo...
单项选择题The deck control valve to be（）after being repaired.
A.moved and fitted again B.removed and refitted C.reproduced and put on again D.returned and attached again
