网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
When to remove scale from the cooling spaces, acid solution （） in the system can be tested from time to time by putting some on to a piece of lime.
A
strength
B
dense
C
percentage
D
velocity
参考答案
参考解析
解析：
暂无解析
更多 “单选题When to remove scale from the cooling spaces, acid solution （） in the system can be tested from time to time by putting some on to a piece of lime.A strengthB denseC percentageD velocity” 相关考题
考题
Which of the following is the MOST important factor when considering environmental factors?()
A. Server room access should be limited to authorized personnel.B. Servers should be kept in a warm and dark environment.C. Remove the floppy drives from the system.D. The server administrator should ensure adequate levels of cooling.
考题
Which of the following is the MOST important factor when considering environmental factors?（）A、Server room access should be limited to authorized personnel.B、Servers should be kept in a warm and dark environment.C、Remove the floppy drives from the system.D、The server administrator should ensure adequate levels of cooling.
考题
You install Windows 2000 Professional on your portable computer. You install an SCSI and PC card adapter, that you can use in the office to use color scanner. You use a docking station for your computer when you are in the office. You want to maximize the battery performance for your portable computer. You also want to prevent the driver from loading whenever you are away from the office. What should you do?（）A、When away from the office use Device Manager to remove the adapter. B、When away from the office configure the startup properties for the adapter to be automatic. C、Remove the computer from the docking station and start Windows 2000 Professional to disable the SCSI PC card adapter device for the current profile.D、Remove the computer from the docking station and start Windows 2000 Professional, use Device Manager to remove SCSI PC card adapter device.
考题
You are the administrator of a network supporting Windows 2000 Professional computers. You want to configure user Group Policy to achieve these results: Allow users to view the options in the Offline Files dialog box Remove the Offline Files tab from the Folder Options dialog box Disable the Settings button in the Offline Files Status dialog box Remove the Settings command from the Offline Files shortcut menu Your proposed solution is to enable the group policy setting Disable user configuration of Offline Files. Which results does the proposed solution provide?（）A、Users can view the options in the Offline Files dialog boxB、The Offline Files tab is removed from the Folder Options dialog boxC、The Settings button in the Offline Files Status dialog box is disabledD、The Settings command is removed from the Offline Files shortcut menu
考题
单选题A container holds 8 pints of a solution which is 25% acid. If 2 quarts of pure acid are added to the container, what percent of the resulting mixture is acid? (1 quart=2 pints)A
50B
20C
40D
45E
35
考题
单选题During the running of the diesel engine, if the supply of cooling water is interrupted or the temperature of cooling water out of the cylinder is too high, the duty engineer should （）A
notify the duty officer, reduce the engine speed, take some measures to remove failuresB
notify the duty officer and stop the engine immediately, find the cause and remove failuresC
notify the C/ED
notify the captain
考题
单选题When fighting a spreading fire resulting from a broken fuel line, you should FIRST （）.A
look for a CO2 extinguisherB
use a soda acid extinguisherC
shut off the fuel supplyD
smother the fire with rags
考题
单选题What is the purpose of sub cooling R-12 in the condenser?（）A
to increase the system efficiency by sensible heat transferB
to stop the liquid from flashingC
to reduce the load on the compressorD
to remove latent heat of vaporization and the suction piping transfer
考题
单选题The purpose of treating the cooling water of the diesel engine is to（） Ⅰ. resist the scale formation in the cooling chamber Ⅱ.lubricate the engine part Ⅲ.increase thermal capacity Ⅳ.resist corrosionA
Ⅰ+ⅡB
Ⅱ+ⅢC
Ⅲ+ⅣD
Ⅰ+Ⅳ
考题
单选题When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.A
to decrease scale formationB
for better cooling effectC
for more economical purposeD
to raise vacuum
考题
单选题Which of the following is the MOST important factor when considering environmental factors？（）A
Server room access should be limited to authorized personnel.B
Servers should be kept in a warm and dark environment.C
Remove the floppy drives from the system.D
The server administrator should ensure adequate levels of cooling.
考题
单选题A separate piston cooling system is used （） any contamination from piston cooling glands to the piston cooling system only.A
to helpB
to limitC
to protectD
to remove
考题
多选题“Sewage” as defined in MARPOL Annex IV means:（）ADrainage and other wastes from any form of toilet and urinalsBDrainage from medical premises (dispensary, sick bay, etc. via wash basin, wash tubsand scuppers located in such premisesCDrainage from spaces containing living animalsDOther waste waters when mixed with the drainage defined above
考题
单选题Expansion tank should be used to remove （） from cooling water.A
scaleB
sludgeC
chemicalsD
air
考题
单选题Water is a very effective fire extinguishing agent because it（）A
will remove all the toxic fumes from the airB
has the greatest cooling abilityC
will leave no harmful residueD
completely removes combustible vapors from the air
考题
单选题When distilling salt water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.A
to cut down the amount of cooling water neededB
to prevent an excess amount of cooling water from being discharged to the bilgesC
to supply hot water to the evaporator for more economical operationD
None of the above is tree
考题
单选题When the machinery spaces are in the periodic unmanned condition, shall be immediately available and on call to attend the machinery space（）.A
the chief engineerB
the designated engineer from shipyardC
the designated duty officer in charge of the engineering watchD
the designated surveyor from classification society
考题
单选题In order to properly remove air from the casing of a centrifugal pump when starting, the pump should have a （）.A
positive headB
negative suction headC
mechanical sealD
vent valve attached to the casing at the top of the volute
考题
单选题When installed for bilge pumping or ballast duty, centrifugal pumps require a （） to remove air from the suction pipe.A
air chamberB
head lankC
primerD
prime mover
考题
单选题When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.A
increase the amount of cooling water to the condenserB
decrease the amount of cooling water to the condenserC
add more refrigerant to the systemD
remove some refrigerant from the system
考题
单选题Which precaution should be taken when testing a line throwing gun?（）A
Never remove the line from the rocketB
Fire it at an angle of approximately 90 degrees to the horizonC
Wear asbestos glovesD
All of the above
考题
单选题When separating the lube oil without additive, it is usually cleaned with hot water; the aim is to remove （） from it.A
acidB
sludgeC
mechanical impurityD
salinity
考题
单选题It is necessary to remove （） from the cooling water spaces to improve heat transfer.A
limeB
frostC
scaleD
scar
考题
单选题Acid solution（） in the system can be tested from time to time by putting some on to a piece of lime.A
strengthB
denseC
percentageD
velocity
考题
单选题When oil is accidentally discharged into the water，what should you do after reporting the discharge（）.A
Contain the oil and remove as much of it as possible from the waterB
Throw chemical agents on the water to disperse the oilC
Throw sand on the water to sink the oilD
Obtain your permit from the Corps of Engineers
考题
单选题When fighting fires in spaces containing bottles of LPG (liquefied petroleum gas)，you should （）.A
attempt to isolate the fire from the LPGB
cool the bottles or remove them from the fire areaC
see that the valves on all LPG bottles are closedD
place insulating material over the bottles
热门标签
最新试卷