更多"A large group of stars revolving ar"的相关试题:
[单项选择]A group of stars which appear close together and form a striking configuration such as a person or animal is a（）.
A. cluster
B. shower
C. constellation
D. galaxy
[多项选择]在基于行为的面试中，考官的主要任务是收集应聘者过去的STARs。所谓STARs指的是（）
A. Situation
B. Target
C. Action
D. Results
[单项选择]The approximate positions of the stars are based on sidereal time，which is based upon rotation of the Earth relative to（）.
A. winter solstice
B. autumnal equinox
C. summer solstice
D. vernal equinox
[单项选择]在Windows2000中，如果User1属于Group1与Group2两个群组，只有Group1具有管理文档的权限，则User1（）。
A. 也具有管理文档的权限
B. 时有时无
C. 不具有管理文档的权限
D. 不确定
[单项选择]Large marine diesel engines of crosshead construction generally have two systems of lubrication: a total loss system feeding the （） and a recirculation system lubricating the running gear and cooling the piston.
A. cylinder liners and piston rings
B. main bearings
C. crankpin bearings
D. turboblower
[单项选择]He（）less time reading stories about film stars than before.
A. takes
B. spends
C. costs
D. pays
[多项选择]How could a large corporation with many specialized divisions benefit from using VLANs on their networks?（）
A. VLANs allow access to network services based on department, not physical location.
B. VLANs utilize packet filtering to enhance network security.
C. VLANs provide a low-latency, high bandwidth internetworking alternative.
D. VLANs provide a method of communication between IP addresses in large networks.
E. VLANs establish segmented broadcast domains in switched networks.
F. VLANs can greatly simplify adding, moving, or changing hosts on the network.
[单项选择]largedata中的large意思是（）
A. 体量大
B. 面积大
C. 规模大
D. 体积大
[单项选择]Cast iron pistons used in large propulsion diesel engines are constructed with （）
A. not taper what so ever
B. the skirt being tapered and smaller than the crown
C. the skirt being tapered and larger than the crown
D. the crown being tapered and smaller than the skirt
[单项选择]Stating a large propulsion diesel engine using diesel fuel during cold weather conditions can be made easier by （）
A. increasing the quantity of starting air
B. increasing the lube oil pressure
C. heating the engine fuel supply
D. heating the engine jacket water
[单项选择]Large quantities of uncovered pig iron or billets should not be carried in the upper-tween decks because（）.
A. this does not eliminate the risk of cargo shifting
B. this will increase the metacentric height of the ship
C. this will decrease the gravity height of the ship
D. this will reduce the rolling period of the ship
[单项选择]If a large difference exists between the compressor discharge pressure and the pressure corresponding to the existing condensing temperature in a refrigeration system, you should（）.
A. increase the flow of the cooling water through the condenser
B. adjust the high pressure cutout to maintain the desired pressure
C. open the hot gas bypass temporarily to reduce capacity
D. purge non-condensable gases to reduce the excess pressure
[单项选择]Large crosshead type engine generally has two lubrication systems, a function performed only by cylinder oil system is（）
A. lubricating
B. cooling
C. sealing
D. cleaning
[单项选择]The connecting rod large end bearing shell generally has tags for location and oil grooves round the center of its axial length which correspond with grooves in the （） through which oil is transmitted up the rod to lubricate the small end.
A. connecting rod
B. piston rod
C. bearing housing
D. none of the above
[单项选择]One method of constructing large marine diesel engines and reducing the total engine frame weight is through （）.
A. casting interlocking components
B. welding plates to form sections for assembly
C. forging integral components
D. case hardening integral components
[单项选择]In large marine diesel engines cylinder oils usually contain additives formulated to impart the （） to clean the rings and grooves.
A. inefficiency
B. oiliness
C. detergency
D. purity
[单项选择]On a large diesel engine installation, crankshaft axial alignment is maintained by the （）
A. piston rod guides
B. engine thrust bearing
C. crosshead bearing
D. main shaft flexible coupling
