After an explosion，repair of emergency machinery and services should be accomplished（）.

A . eliminating sparks and fire in the vicinity of cargo tanks B . removing all hydrocarbon gases from the cargo tanks C . blanketing cargo tanks with inert foam D . reducing the oxygen concentration below levels necessary for combustio

A . send B . sends C . was sent D . were sent

A . constructive total loss B . salvage loss C . actual loss D . preferred lo

A . the cylinder liner B . the cylinder cover C . the cylinder jacket D . the pisto

A . disassembled B . renewed C . measured D . regulated

A . moved and fitting again B . removed and refitted C . reproduced and put on again D . return and attached agai

A . excessive purging before lighting off B . insufficient trail for ignition period C . a faulty transformer in the ignition circuit D . insufficient purging before lighting off

A . selected B . collected C . detected D . effected

A . auto-ignition point B . flash point C . lower explosive limit (LEL) D . threshold limit value (TLV)

A . after the mooring trial has passed B . before the mooring trial C . under the surveyors supervision D . after repair

A . increase engine speed to insure adequate flow of oil to all parts of the engine B . pay no attention unless there are unusual noises from the engine C . check operating pressures and temperatures，and check for leaks D . run the engine at idle until the temperature has increased

A、lubricating oil B、compressed air C、cooling water D、sealing ring

After the guests left, she spent half an hour _______ the sittingroom. A) ordering B) arranging C) tidying up D) clearing away

<img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/31f166c0cedddf6946f2b336e2153075.jpg' /> A. The command performs the recovery and closes the failures. B. The command only displays the advice and the RMAN script required for repair. C. The command produces an error because the ADVISE FAILURE command has not been executed before the REPAIR FAILURE command. D. The command executes the RMAN script to repair the failure and removes the entry from the Automatic Diagnostic Repository (ADR).

A) assessment B) estimate C) announcement D) evaluation

A．blast can cause shrapnel or other bits of metal to slice through flesh like a knife B．its energy can cause a swath of disfiguring burns C．this energy wall can prevent victims from physical injury and obvious bleeding D．its tremendous energy can inflict massive internal injuries

The process right now is to continue the interviews and then get back down underground and complete the inspections and in that way we can complete the investigation as to what happened. The brother-in-law of the miner killed says 43-year-old Dlae Reightler worked at the mine since he was a teenager and that he dreamed of moving his wife and four children, setting up an auto-repair business. He did it all his life. He did that and worked on cars in his garage backyard. He enjoyed doing that stuff. At the mine, the accident knocked out the ventilation system, making it too dangerous for investigators to go down into the mine shaft. Regulators ordered the facility closed until the investigation is complete. The area has the nation’s only deposits of anthracite, a type of hard, clean burning coal. A June inspection of the site turned up no violations and violations detected in August were fixed on site. The investigation was dangerous because ______. A．the mine was badly damaged B．the ventilation system was broken C．the mine was too deep D．the safety facility was destroyed

是 否

A．endorsed B．enhanced C．occurred D．related