The CO2 flooding system is actuated by a sequence of steps which are ______.A.break glass, pull valve, break glass, pull cylinder controlB.sound evacuation alarm, pull handleC.open bypass valve, break glass, pull handleD.open stop valve, open control valve, trip alarm
The CO2 flooding system is actuated by a sequence of steps which are ______.
A.break glass, pull valve, break glass, pull cylinder control
B.sound evacuation alarm, pull handle
C.open bypass valve, break glass, pull handle
D.open stop valve, open control valve, trip alarm
相关考题:
Astheycan'taffordtoletthesituationgetworse,theywilltakesomenecessary_______. A.decisionsB.sidesC.directionsD.steps
When meeting at a pub for drinks, a popular pastime in England, each person in the group will buy everyone a(). A、roundB、dozenC、bottleD、glass
Repair of vital machinery and services on a ship should be accomplished ______.A.after control of fire, flooding, and structural repairsB.immediatelyC.after control of fire, but before control of floodingD.after stability is restored
Information engineering emphasizes a modeling tool called ______ relationship diagrams.A.entityB.classC.stateD.sequence
AEach day every person in the United States throws away more than five pounds of rub-bish. There is more rubbish now than ever before and most of it is made up of the packages and cans in which we buy our food.The traditional ways of getting rid of solid wastes is quickly be-coming inadequate(不合适). Many cities are experimenting with newer ways of handling their growing piles of rubbish.One of these new ways is "recycling". Through recycling,usable materials are taken out of wastes and added into something else. These usable parts of wastes are put through the cycle of going from a raw material(原材料) to a finished product again.In some cities a machine called a hydrapuler (The machine got and named from hydra,which :means "fwater .)is being used to help recycle rubbish A hydrapuler is like a huge mixing machine.The rubbish is dumped onto endless moving belt that feeds the machine. At the same time,water is pumped into the hydrapuler. With a whirling(旋转) and mixing action,the hydrapuler throws out the.heavy metal objects that can later be sold as waste metal. The rest of the rubbish-paper,food,plastic.rubber,rags,glass,wood,leaves,and other things disintegrates(碎裂) ,or falls apart. The rubbish is then mixed with water and carried in a slush(泥状物) to another piece of equipment where glass,sand and small pieces of metal come out.With the hydrapuler,up t0 95 percent of the original rubbish is reclaimed. The remainder is turned into ash.( ) 21. Rubbish means___________-A. packagesB. cansC. wastesD. heavy metal objects
已知turtle库画圆的函数原型如下: circle(radius[,extent,steps]) 能够画一个半径为100的圆的内接正六边形的是()。A.circle(100, steps=6)B.circle(100, 360, 6)C.circle(100, 6)D.circle(100, steps=6, 360)
【单选题】Flooding协议在使用中存在不足之处。下列不是Flooding协议的缺点的是()。A.信息内爆B.对网络要求较高C.部分重叠D.资源盲目利用