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【单选题】
车钩组装后, 13 号、 13A 、 13B 型下作用车钩钩锁铁移动量不大于( )。A.
11mm
B.
13mm
C.
20mm
D.
22mm
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【简答题】specter giddy ultimately vilified contaminated outstripping proceeded supply indefinitely enhance In previous time, when fresh meat was in short _______, pigeons were kept by many households a...
【简答题】晶体三极管的等效理解。晶体三极管工作在截止状态时,C E 之间相当于开关________(闭合/断开);工作在饱和状态时,C E 之间相当于开关________(闭合/断开);工作在放大状态时,C E 之间相当于________。
【单选题】In the history of the hotel industry, thecharacteristicsoftheinn periodwas that（ ）
A.
the hotel facilities were primitive , and the price was low.
B.
the h otel s o ffered luxury facilities and services , and t he expense was prohibitive.
C.
the h otel s were clean , comfortable , and affordable
D.
famous hotel chains expanded rapidly all over the world .
【单选题】In the history of the hotel industry, thecharacteristicsofthemodern hotel period was that（ ）
A.
t he hotel facilities were Primitive , and the price was low.
B.
the h otel s o ffered luxury facilities and services , and t he expense was prohibitive.
C.
the h otel s were clean , comfortable , and affordable.
D.
f amous hotel chains expand ed rapidly all over the world .
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