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【单选题】
运动系统是由骨、骨连结和骨骼肌组成,约占人体重的()，,无论是简单的手足动作,还是复杂的全身动作,都是以骨为杠杆、关节为枢纽,骨骼肌收缩为动力来实现的。A.
40%-50%
B.
50%-60
C.
60%-70
D.
70-80%
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【简答题】短文改错（满分10分） After I finished the school this year，I began to 91._________ look for work. Now several month later， I still didn't 92._________ find the job that I was interested. Last Sunday morning ...
【单选题】下图所示传动系统由蜗杆传动和圆锥齿轮传动组成，已知输出轴上的锥齿轮4的转向n4。欲使中间轴上的轴向力能部分抵消，请回答以下问题。【图片】第1问：蜗轮2的轴向力和圆周力的方向为 。
A.
轴向力向右、圆周力向纸外
B.
轴向力向左、圆周力向纸内
C.
轴向力向右、圆周力向纸内
D.
轴向力向左、圆周力向纸外
【简答题】阅读理解。 On my first trip in the United States, I went to San Antonio. I was on foot. So I went to only three places there: the Alamo, the River Walk, and the Art Gallery. I especially enjoyed visiting t...
【简答题】完形填空。 When I was 14, my family went on our first trip to the United States. My uncle moved there several years ago to work in the 1 industry in California. Although we flew several times before. this ...
【简答题】读一读，补全短文。 ate sat liked had watched went excited Last week, I had my first trip on an airplane. It was fun! I ___________ next to the window. I saw houses, parks, and swimming pools ...
【单选题】听力原文： IRAN The Guardian Council said Friday that it had found no significant violations after 10 days of investigating the disputed June 12 presidential election. All three defeated candidates have pr...
A.
Rioters should be executed.
B.
There was no fraud in the election.
C.
More than 17 people died in the violence.
D.
Thousands of Iranians had visited Tehran's main cemetery.
【简答题】钻孔灌注桩施工,当桩位于地下水位以上时,可采用 成孔方法;若处于地下水位以下则可采用 成孔方法进行施工。
【多选题】关于标准化的管理原理的论述，正确的是()
A.
实践证明，标准系统的效应是多个标准系统互相协同的结果，这个效应低于标准个体效应的总和
B.
在对标准系统实施的过程中，应不断协调彼此的关系，及时发现结构的不合并加以调整
C.
结构状态良好的系统，不会由于外部环境的变化而向无序方向演化
D.
标准系统的存在和发展，仅仅依赖于其内部要素的互相作用
E.
标准系统同环境的联系表现在它和环境之间的物质和信息的不断交换过程中
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