皮皮学，免费搜题
登录
搜题
【单选题】
润滑条件相同时,以下四种精度和内径相同的滚动轴承中 _________ 轴承的极限转速最高。A.
圆柱滚子轴承
B.
角接触球轴承
C.
圆锥滚子轴承
D.
推力球轴承
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】我国宪法规定,中华人民共和国是工人阶级领导的,以工农联盟为基础的人民民主的社会主义国家,中华人民共和国的一切权力属于人民。围绕着宪法这种规定,两位同学发表了各自的看法,请你对他们的观点进行辨析。 小芳:人民作为国家主人,可以想怎么样就怎么样 小华:国家权力属于人民,人民直接行使国家权力
【多选题】Which of the following voltages can be measured from a Molex connector on the power supply?（）
A.
1.5 volts
B.
3 volts
C.
5 volts
D.
12 volts
E.
115 volts
【简答题】The memory in PLC can keep the program when there is no electricity power supply.
【单选题】Which of the following can occur if the maximum rated load is exceeded on an uninterruptible power supply (UPS)?（）
A.
There is a fire hazard potential if a power outage occurs.
B.
The last system plugged into the UPS will not be provided any power.
C.
The UPS will draw more power from the circuit to compensate.
D.
The runtime of the UPS will be insufficient if a power outage occurs.
【单选题】For products where the firm has market power, coordination in the supply chain can be achieved and supply chain profits maximized through the use of
A.
two-part tariffs or volume based quantity discounts.
B.
marginal unit quantity discounts.
C.
all unit quantity discounts.
D.
basic quantity discounts.
【单选题】In addition, the DS18B20 can derive power directly from the ______ line (“parasite power”), eliminating the need for an external power supply.
A.
control
B.
address
C.
data
【简答题】The power supply can convert ______________ or ______________ energy into _____________ energy.
【单选题】The output voltage of the Power Supply can be continuously adjusted over the range of ( ).
A.
Less than 2 mV pp
B.
100-240V AC
C.
0-24V DC
D.
0-10A DC
相关题目：
参考解析：
知识点：
题目纠错 0
发布
