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【单选题】
在UG8表盘式液压调速器中小反馈活塞的动作是由( )控制的。答案A.
控制滑阀和调速弹簧
B.
浮动杆和大反馈活塞
C.
反馈弹簧和大反馈活塞
D.
飞重和滑阀 根据UG8表盘式液压调速器的工作原理可知,当负荷变化时,输出轴将逆时针或顺时针转动,反馈杠杆上下移动,带动大反馈活塞上下移动,致使小反馈活塞上下移动并压缩或扩张反馈弹簧。此时浮动杆带动滑阀运动,使其返回平衡位置,重新封闭控制使动力活塞停止加油移动。此后,由于反馈弹簧的恢复作用,将使小反馈活塞逐渐复位,如果小反馈活塞逐渐复位的速度能与调速杆运行速度相适应,就能使滑阀不必再动而迅速稳定在平衡位置,使柴油机转速快速稳定。因此其小反馈活塞的动作是由反馈弹簧和大反馈活塞控制的。
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【简答题】简答题:你对吴和临川派论争作何评价?
【单选题】In Japan most people still feel that a woman's place is in the home; and most women willingly accept their traditional role as wife, leaving the business of making a living______ their husbands.
A.
to
B.
with
C.
for
D.
on
【简答题】何谓内燥,与外燥有何异同,如何鉴别?
【单选题】The author suggests that if the observers of Japan were correct, which of the following would be the case?
A.
The equipment used in Japanese automobile plants would be different from the equipment used in United States plants.
B.
Japanese workers would be trained to do several different production jobs.
C.
Culture would not have an influence on the productivity levels of workers.
D.
The production levels of Japanese-run plants located in the United States would be equal to those of plants run by United States companies.
【单选题】In Japan, most people still feel that a woman's place is in the home and most women willingly accept their【C1】______role as wife, leaving the business of making a living【C2】______their husbands. For t...
A.
conservative
B.
usual
C.
traditional
D.
unhappy
【单选题】关于蜂窝织炎的描述错误的是(一般)
A.
病变组织呈马蜂窝状
B.
皮肤、肌肉和阑尾是好发部位
C.
主要由溶血性链球菌引起
D.
病变弥漫与细菌透明质酸酶和链激酶有关
E.
淋巴细胞弥漫浸润组织
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