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【单选题】
对轧钢机、矿山机械和起重机等低速转动齿轮的传动精度要求较高的是() (1)传递运动的准确性(2)传动平稳性; (3)载荷分布的均匀性(4)侧隙合理性
A.
（1）传递运动的准确性
B.
(2)传动平稳性
C.
(3)载荷分布的均匀性
D.
(4)侧隙合理性
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【单选题】Which of the following statements concerning the productivity levels of automakers can be inferred from the passage?
A.
Prior to the 1960's, the productivity levels of the top Japanese automakers were exceeded by those of United States automakers.
B.
The culture of a country has a large effect on the productivity levels of its automakers.
C.
During the late 1970's and early 1980's, productivity levels were comparable in Japan and the United States.
D.
The greater the number of cars that are produced in a single lot, the higher a plant's productivity level.
E.
The amount of capital investment made by automobile manufacturers in their factories determines the level of productivity.
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【单选题】不属于马克思主义创立的经济背景的是()。
A.
工业革命
B.
经济危机
C.
无产阶级的登上历史舞台
D.
机器大工业时代促进了生产力的发展
查看完整题目与答案
【单选题】CSS中的选择器不包括( )
A.
标签选择器
B.
伪类选择器
C.
类选择器
D.
ID选择器
查看完整题目与答案
【单选题】下列关于溶解性总固体的描述错误的是( )
A.
溶解性总固体又称为可滤过性固体
B.
溶解性总固体的量可用来表示水中各种阴离子和阳离子的量的总和
C.
某水样溶解性总固体计算值为525 mg/L,测定值为500mg/L,说明测定结果准确。
D.
我国规定生活饮用水溶解性总固体标准为≤ 1000 mg/L
E.
溶解性总固体在数量上要比含盐量低
查看完整题目与答案
【简答题】The new hotel has erected a beautiful building with areas and conference facilities on the top floor in which the finest view of the city can be obtained. in which 改为A. from which
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【单选题】If you want to search for the top journals, which of the following can be of great help to you?
A.
CPCI
B.
JCR
C.
GPO
查看完整题目与答案
【单选题】下列行业中属于第三产业的是( )。
A.
建筑业
B.
林业
C.
制造业
D.
商业
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【简答题】马克思主义创立的历史背景()
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【单选题】It can be inferred from the passage that the author believes which of the following concerning the top-down method of nanotechnology?
A.
The top-down method tends to be accurate but highly inefficient, resulting in a process that takes a great deal of time and energy.
B.
The top-down method, unlike the bottom-up method, tends to disobey the rules of many chemical interactions.
C.
The top-down method requires a greater level of technological involvement than does the bottom-up method.
D.
The top-down method shows the limits of nanotechnology methods that rely too heavily on parallel processes.
E.
The top-down method is fairly useless when applied to the problem of creating a single molecule.
查看完整题目与答案
【单选题】下列内容哪项说法是错误的
A.
强化弹性防御线和避免遇到压力源是一级预防
B.
把压力源控制到最小限度是三级预防
C.
恢复现有的不均衡状态是一级预防
D.
强化弹性防御线和避免压力源是二级预防
查看完整题目与答案
相关题目：
【单选题】Which of the following statements concerning the productivity levels of automakers can be inferred from the passage?
A.
Prior to the 1960's, the productivity levels of the top Japanese automakers were exceeded by those of United States automakers.
B.
The culture of a country has a large effect on the productivity levels of its automakers.
C.
During the late 1970's and early 1980's, productivity levels were comparable in Japan and the United States.
D.
The greater the number of cars that are produced in a single lot, the higher a plant's productivity level.
E.
The amount of capital investment made by automobile manufacturers in their factories determines the level of productivity.
查看完整题目与答案
【单选题】不属于马克思主义创立的经济背景的是()。
A.
工业革命
B.
经济危机
C.
无产阶级的登上历史舞台
D.
机器大工业时代促进了生产力的发展
查看完整题目与答案
【单选题】CSS中的选择器不包括( )
A.
标签选择器
B.
伪类选择器
C.
类选择器
D.
ID选择器
查看完整题目与答案
【单选题】下列关于溶解性总固体的描述错误的是( )
A.
溶解性总固体又称为可滤过性固体
B.
溶解性总固体的量可用来表示水中各种阴离子和阳离子的量的总和
C.
某水样溶解性总固体计算值为525 mg/L,测定值为500mg/L,说明测定结果准确。
D.
我国规定生活饮用水溶解性总固体标准为≤ 1000 mg/L
E.
溶解性总固体在数量上要比含盐量低
查看完整题目与答案
【简答题】The new hotel has erected a beautiful building with areas and conference facilities on the top floor in which the finest view of the city can be obtained. in which 改为A. from which
查看完整题目与答案
【单选题】If you want to search for the top journals, which of the following can be of great help to you?
A.
CPCI
B.
JCR
C.
GPO
查看完整题目与答案
【单选题】下列行业中属于第三产业的是( )。
A.
建筑业
B.
林业
C.
制造业
D.
商业
查看完整题目与答案
【简答题】马克思主义创立的历史背景()
查看完整题目与答案
【单选题】It can be inferred from the passage that the author believes which of the following concerning the top-down method of nanotechnology?
A.
The top-down method tends to be accurate but highly inefficient, resulting in a process that takes a great deal of time and energy.
B.
The top-down method, unlike the bottom-up method, tends to disobey the rules of many chemical interactions.
C.
The top-down method requires a greater level of technological involvement than does the bottom-up method.
D.
The top-down method shows the limits of nanotechnology methods that rely too heavily on parallel processes.
E.
The top-down method is fairly useless when applied to the problem of creating a single molecule.
查看完整题目与答案
【单选题】下列内容哪项说法是错误的
A.
强化弹性防御线和避免遇到压力源是一级预防
B.
把压力源控制到最小限度是三级预防
C.
恢复现有的不均衡状态是一级预防
D.
强化弹性防御线和避免压力源是二级预防
查看完整题目与答案