During fueling, all doors. Hatches,and ports（）.

A . (1)+(2) B . (1)+(3) C . (2)+(3) D . (1)+(2)+(3)

A . see the medic immediately B . spray hinself with foam or CO C . complete his task and then see medic D . remove the clothing and wash

A . center of gravity is lowered B . center of buoyancy is lowered C . reserve buoyancy is unchanged D . hull freeboard is increased

A . ensure penetration and distribution of the fuel in the combustion chamber B . ensure the needle valve is flushed clean during each injection C . prevent combustion gas blowback into the open needle valve D . prevent reflected pressure waves when the needle valve close

A . which B . who C . what D . whose

A . see the medic immediately B . spray himself with foam or CO C . complete his task and then see the medic D . remove the clothing and wash

A . All engines，motors，fans，etc. should be shut down when fueling B . All windows，doors，hatches，etc. should be closed C . A fire extinguisher should be kept nearby D . Fuel tanks should be topped off with no room for expansio

A . expansion space to leave in a tank B . flash point at which the fuel will burn C . temperature to which the fuel must be heated D . rate at which the fuel can be pumped during transfer operatio

A . close the tank filling valves quickly B . top off all tanks at the same time C . rill completely all tanks to less than 95% full D . reduce the loading rate when topping off

A . proceed with fueling operation B . have helicopter move to a safer location C . wash spilled fuel away with a flood of water D . clean spilled fuel with rag

A . allowed B . forbidden C . approved D . disliked

A . blockaded B . opened C . closed D . enclosed

A . Reduce the pumping rate by closing the deck filling valve B . Close all overflow valves C . Place 5 gallon containers under all flange connections in the fuel line D . Reduce the pumping rate and sound tanks frequently as the level rise

A . TDC B . DTC C . BDC D . BCD

A．They were lauded as aiding the war cause. B．They improved women's economic situation. C．They were considered proof of women's abilities to organize themselves. D．They created new occupational opportunities for women. E．They improved women's images of themselves.

A．a sharp increase in auto sales B．a great drop in inflation C．further cuts in official rates D．the slow growth of wages 此题为多项选择题。

W: I don't think so. It must be the window-cleaner working upstairs. Q: Where does the woman think the noise is coming from？ (2) A．From upstairs. B．From next door. C．From the Nelsons' house. D．From the back door.

If you live in an apartment, know the ways you can use to get out. Show everyone in the family these routes. Stress the importance of using stairways or fire escapes, not elevators. From most homes and the lower floors of apartment buildings, escape through windows is possible. Learn the best way of leaving by a window with the least chance of serious injury. In a home fire, windows are often the only means of escape. The second floor window sill is usually not more than 13 feet from the ground. An average person, hanging by the fingertips, will have a drop of about six to the ground. Of course, it is after to jump a short way than to stay in a burning building. Rolling away from the building when you land. Windows are also useful when you are waiting for help. Often you'll be able to stay in the room for several minutes if you keep the door closed and the windows open. Keep your head low in the window to be sure you get fresh air rather than smoke that may have leaked into the room. On a second or third floor, the best windows for escape are those which open onto a roof or balcony. From the roof or balcony, a person can either drop to the ground or await rescuer. Dropping onto cement or pavement might end in injury. Bushes, soft earth, and grass can help to break a fall. A rope ladder should be considered when the drop is too great. In a town where the fire department acts quickly, it may be best to wait for rescuer. Close the doors and wait by an open window for help. Shout for help. Be sure to close the door before opening a window. Otherwise, smoke and fire may be drawn into the room by the draft. From most homes you can escape a fire through the ______. A．attic B．garage C．windows D．balcony

A．The collapse of the old world order B．The rebirth of the Eastern countries C．The beginning of European decline D．The birth of modernity 此题为多项选择题。