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【单选题】
曳引式客梯的平衡系数应为 ( ) 。A.
0.20~0. 25
B.
0.40~0.50
C.
0.50-0.75
D.
0.75-1. 00
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皮皮学刷刷变学霸
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【单选题】听力原文：W: Oh, there is so much dirt on the floor. I wonder how it got there. M: Let me get the dust pan and brush. I'll clean it up for you. Q: What is the man going to do for the woman? (3)
A.
Wash some pans.
B.
Clean up the floor.
C.
Dust the house.
D.
Brush her hair.
【简答题】下表是黄土高原西部地区某山区贫困县的人工造林地调查数据,以地块面积作为统计分组标志,请计算其平均值、中位数和众数 。 分组序号 1 2 3 4 5 6 7 8 9 10 11 分组标志 (0,1] (1,2] (2,3] (3,4] (4,5] (5,6] (6,7] (7,8] (8,9] (9,10] (10,11) 组中值 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8....
【简答题】If you _____ a floor or other suce, you clean it by pushing a brush over it in order to collect the dirt in one place.
【单选题】An early part of the Aeronautical Decision Making (ADM) process involves
A.
Understanding the drive to have the "right stuff."
B.
Taking a self-assessment hazardous attitude inventory test.
C.
Obtaining proper flight instruction and experience during training.
【简答题】... if food spends just a few seconds on the floor, dirt and germs won't have much of a chance to contaminate it...
【简答题】阳极散粒噪声包含 (选填“阴极”或“阳极”) 散粒噪声和各级倍增极的散粒噪声
【判断题】Refresher courses and various tests are designed to upgrade flight instructors’ aeronautical knowledge.
A.
正确
B.
错误
【单选题】老年男性,吸烟史20支/天*30年,反复咳嗽、咳痰20余年,气喘10年,3天前感冒后痰多伴气喘。查体:呼吸急促,口唇发绀,双肺少许湿啰音及哮鸣音,血白细胞11×109/L,中性粒细胞84%,淋巴细胞16%,X线胸片示双肺纹理粗乱,散在小点片状阴影。最可能的诊断为:( )
A.
支气管哮喘发作
B.
支气管扩张继发感染
C.
肺结核继发感染
D.
阻塞性肺炎
E.
慢性阻塞性肺病急性加重
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