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
The bearing cap and shell are replaced and tightened up until （）.
A
the “ nip ”is zero
B
the “ nap ” is zero
C
the “ gap ”is correct
D
the “ clearance ” is correct
参考答案
参考解析
解析：
暂无解析
更多 “单选题The bearing cap and shell are replaced and tightened up until （）.A the “ nip ”is zeroB the “ nap ” is zeroC the “ gap ”is correctD the “ clearance ” is correct” 相关考题
考题
The house I grew up ________ has been taken down and replaced by an office building.A. in itB. inC. in thatD. in which
考题
The enemy gave up the idea of holding their ground to the end and began to _____.A. retreatB. relayC. replaceD. reclaim
考题
The UNIX operating system is made up of three parts; the kernel, the shell and the programs. The kernel of UNIX is the(71)of the operating system: it allocates time and memory to programs and handles the filestore and communications in response to(72). The shell acts as an(73)between the user and the kernel. When a user logs in, the(74)program checks the username and password, and then starts another program called the shell. The shell is a command line(75)(CLI). It interprets the commands the user types in and arranges for them to be carded out. The commands are themselves programs: when they terminate, the shell gives the user another prompt(% on our systems).A．hubB．centerC．coreD．nucleus
考题
In an engine with a pot-shaped piston, some lubricating oil from the main bearing will pass along a drilled passage in the crankshaft to the bottom end bearing and then up a connection rod to theA.crossheadB.crankpinC.crank journalD.gudgeon pin
考题
Because of the high loads the bearing material is a tin-aluminum(锡-铝) alloy bonded to a steel shell. The crosshead pin is highly polished to a______.A.flat surfaceB.mirror finishC.sloping(倾斜的) surfaceD.inclined(倾向的) surface
考题
A user reports the system runs fine for a few minutes and then freezes or locks up. Which of the following is the BEST cause of this issue?（）A、Memory is bad or not seated.B、Fans are failing.C、Power supply needs to be replaced.D、CD-ROM is faulty and needs to be replaced.
考题
这些绑扎工具必须要再次上紧。（）A、These lashing tools must be tightened again.B、These lashing wires must be tightened again.C、These lashing bars must be secured again.D、These cargo wires must be loosened again.
考题
A computer boots up with the error "CMOS Checksum Failure." Which of the following components needs to be replaced？（）A、power supplyB、CMOS chipC、motherboardD、CMOS battery
考题
单选题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 rodB
piston rodC
bearing housingD
none of the above
考题
单选题Because the tie bolts are so close to the crankshaft, some engines employ （）to hold the crankshaft main bearing cap in position instead of conventional studs and nuts.A
through boltsB
jack boltsC
tap boltsD
fitted bolts
考题
单选题Guide tolerances during elevation of the jack-up rig will（）.A
reduce spud can bearing pressureB
keep the unit level and reduce overloadingC
reduce stresses on the hullD
minimize the potential for punch-through
考题
单选题In an engine with a pot-shaped piston, some lubricating oil from the main bearing will pass along a drilled passage in the crankshaft to the bottom end bearing and then up a connection rod to the （）.A
crossheadB
crankpinC
crank journalD
gudgeon pin
考题
单选题In an engine with a pot-shaped piston, some lubricating oil from the main bearing will pass along a （） in the crankshaft to the bottom end bearing andthen up a connection rod to the gudgeon pin.A
telescopic pipesB
large boreC
drilled passageD
tied rod
考题
单选题Shims of different thicknesses are inserted between the shells to enable adjustment of （）.A
the bearing clearancesB
the bearing thicknessC
the bearing strengthD
the bridge hardness
考题
单选题In readying an auxiliary water-tube boiler for a routine hydrostatic test, which of the following procedures should be undertaken prior to filling the boiler with fresh water?（）A
The safety valve escape piping should be disconnected from the valve body and a blank insertedB
The boiler vent valves should be openedC
All hand-hole/manhole covers should be tightened up as much as possible to preclude any leaksD
All of the above
考题
单选题In readying an auxiliary water-tube boiler for a routine hydrostatic test, which of the following procedures should be undertaken prior to filling the boiler with fresh water?（）A
The safety valve escape piping should be disconnected from the valve body and a blank insertedB
The boiler vent valves should be openedC
All handhole/manhole covers should be tightened up as much as possible to preclude any leaksD
All of the above
考题
单选题With the shell and cap assembled as for running, a check must be made that the clearance between the cap and the housing （）.A
has a nipB
is large enoughC
is zeroD
are suitable
考题
单选题An acceptable means of tightening connecting rod and main bearing cap bolts is to measure the （） Ⅰ.torque applied to each nut and bolt assembly Ⅱstretch of each nut before and after tighteningA
ⅠonlyB
Ⅱ onlyC
both Ⅰ and ⅡD
neither Ⅰ nor Ⅱ
考题
单选题Signs of racking stresses generally appear at the（）.A
bow and stern shell frames and platingB
junction of the frames with the beams and floorsC
garboard strake，at each side of the keelD
thrust bearing of the main shaft
考题
单选题The cap and new shell are tightened up and then removed and the thickness of the wire measured by （）.A
a bridge gaugeB
a micrometerC
a thermometerD
a indicator
考题
单选题In a large, low-speed diesel engine the clearance between the piston crown and cylinder head is found to be excessiveIn order to correct for this, you should（）A
build up the piston crown by metal sprayingB
build up the cylinder head by metal sprayingC
insert shims between the crankpin bearing box and the connecting rod footD
install a thinner head gasket
考题
单选题The bearing shell generally has （） for location and oil grooves round the center of its axial length.A
tipsB
tagsC
lipsD
keys
考题
单选题The pumps press oil into the cross-head bearing gap when the load on the shell is at its lowest What is the meaning of “its” in the sentence above?（）A
the cross-headB
the pumpsC
the shellD
the load
考题
单选题To determine the main bearing clearance of a propulsion diesel engine, you should measure the main bearing shell using a ball anvil outside micrometer and measure the crankshaft journal using a/an （）A
telescopingB
ring ‘snap’ gaugeC
inside vernier caliperD
outside micrometer
考题
单选题A user reports the system runs fine for a few minutes and then freezes or locks up. Which of the following is the BEST cause of this issue?（）A
Memory is bad or not seated.B
Fans are failing.C
Power supply needs to be replaced.D
CD-ROM is faulty and needs to be replaced.
考题
单选题Lubricating oil used in a diesel engine serves to（）A
reduce the wear of bearing surfacesB
cool the bearing surfacesC
assist in sealing bearing surfacesD
all of the above
考题
单选题Just after stopping the engine while the oil is still circulating.Check that uniform oil jets appear from all the oil outlet grooves in the crosshead bearing lower shell and the guide shoes.The oil flow from （） must be compared from unit; there should be a similarity in the flow patterns.A
the piston cooling oil return pipesB
the main and crankpin bearingsC
thrust and intermediate bearingsD
stern tube and thrust bearings
热门标签
最新试卷
