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单选题
nut（）
A
螺帽
B
螺栓
C
开口销
D
贯穿螺栓
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拉线塔拉线的NUT型线夹带螺母后的螺杆必须露出螺纹,并应留有不小于()螺杆的可调螺纹长度,以供运行中调整;NUT线夹安装后应将双螺母拧紧并应装设防盗罩。
A、1/4B、1/3C、1/2D、1/5
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While cranking out a quadrantal davit，slippage of the quadrant due to excessive wear or failure of the teeth in the quadrant will cause the ______．A.Davit arm to pivot on the traveling nut and the head to fall outboardB.Traveling nut to lock up in place on the worm gearC.Limit switch to engage and hold the traveling nut in positionD.Winch brake to lock in position and prevent lowering the boat
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架线后对全部拉线进行检查和调整，应符合规定是（）。A、拉线与拉线棒应呈一直线B、X型拉线的交叉处应留有足够的空隙，避免相互磨碰C、拉线的对地夹角允许偏差应为1°，个别特殊杆塔拉线需超出1°时应符合设计规定D、NUT型线夹带螺母后及花篮螺栓的螺杆必须露出螺纹，并应留有不小于1／2螺杆的螺纹长度，以供运行时调整。在NUT型线夹的螺母上应装设防盗罩，并应将双螺母拧紧，花篮螺栓应封固
考题
根据«移动通信工程钢塔桅结构验收规范»NUT型线夹带螺母后的螺杆必须露出螺纹，并应留有（）的可调螺杆长度，在NUT型线夹安装后应将双螺母拧紧并宜装设防盗罩。A、不小于1/4螺杆B、不小于1/3螺杆C、不小于1/2螺杆D、不小于2/3螺杆
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The nut is loose. Lend me a screwdriver, please.（）A、螺帽松了。请借给我一个螺丝刀。B、螺帽松了。请借给我一个钳子。C、螺栓松了。请借给我一个螺丝刀。D、螺栓松了。请借给我一个钳子。
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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
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单选题The lower end of each piston rod is reduced in diameter to fit a bore in （）, this being secured to the piston rod by a nut.A
the crank-webB
the connecting rodC
the main bearingD
the cross-head
考题
单选题While cranking out a quadrantal davit，slippage of the quadrant due to excessive wear or failure of the teeth in the quadrant will cause the（）.A
Davit arm to pivot on the traveling nut and the head to fall outboardB
Traveling nut to lock up in place on the worm gearC
Limit switch to engage and hold the traveling nut in positionD
Winch brake to lock in position and prevent lowering the boat
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单选题The lower end of each piston rod is reduced in diameter to fit a bore in the （）, this being secured to the piston rod by a nut.A
piston gudgeon pinB
piston skirtC
cross-headD
cross-head pin
考题
单选题关于NUT中线癌，叙述正确的是（）。A
高分化鳞状细胞癌B
只发生于儿童和青年C
癌细胞胞质PAS消化前后的阳性物质，不是糖原D
有C-KIT基因突变E
有t（15；19）（q14；q13.1），形成BRD4-NUT融合基因
考题
单选题The lower end of each piston rod is reduced in diameter to fit a bore in the cross-head, this being secured to the piston rod by （）.A
a boltB
a capC
a discD
a nut
考题
判断题拉线受力后，NUT线夹U形螺栓可调部分不得大于全部螺纹长的1/3。A
对B
错
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