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【单选题】
设备电气系统中引起电动机振动的原因是()。
A.
热元件烧断
B.
通风不良
C.
联轴器轴线错位
D.
电源电压过低
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参考答案:
举一反三
【多选题】International terrorist organizations include the following types________.
A.
ethnic terrorist organizations
B.
religious terrorist organizations
C.
leftist terrorist organizations
D.
rightist terrorist organizations
E.
nation-supported terrorist organizations
【单选题】限制空载线路合闸过电压的主要措施是( )。
A.
装设避雷器
B.
装设消弧线圈
C.
采用真空断路器
D.
带并联电阻的断路器
【单选题】Which of the following types of organizations need cost accounting?
A.
manufacturing firms and service organizations only
B.
service organizations and nonprofit organizations only
C.
manufacturing firms and nonprofit organizations only
D.
all types of organizations
【单选题】按照误差的性质不同,测量误差一般可分为
A.
绝对误差、人为误差、仪器误差和引入误差
B.
环境误差、系统误差
C.
标准误差和算术平均误差
D.
随机误差、系统误差、粗大误差
【单选题】What does the evidence suggest about organizations that plan compared to organizations that do not plan?
A.
Planning organizations always outperform nonplanning organizations.
B.
Nonplanning organizations always outperform planning organizations.
C.
Planning organizations generally outperform nonplanning organizations
D.
Nonplanning organizations generally outperform planning organizations.
E.
They generally perform at about the same level.
【单选题】全闭环数控系统中位置检测位置在()。
A.
刀具尖端
B.
主轴前端
C.
电机轴端或丝杠轴端
D.
机床工作台的实际运行位置
【单选题】按照误差的性质不同,误差一般可分为( )
A.
绝对误差、人为误差、仪器误差和引入误差
B.
环境误差、系统误差
C.
标准误差和算术平均误差
D.
随机误差、系统误差
【简答题】测量误差根据其性质不同,一般可分为系统误差、()和粗差。
【简答题】In ________cultures, the individual is emotionally dependent on organizations.
【单选题】Transnational organizations are also known as ________.
A.
multidomestic organizations
B.
borderless organizations
C.
polycentric organizations
D.
ethnocentric organizations
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