指示仪表不仅能直接测量电磁量,而且还可以与各种传感器相配合,进行温度、压力、流量等非

题型:判断题

问题:

指示仪表不仅能直接测量电磁量,而且还可以与各种传感器相配合,进行温度、压力、流量等非电量的测量。

考点:电机装配工中级电机装配工(中级)
题型:判断题

S2126交换机的管理VLAN号是()

A、256

B、1024

C、0

D、1

题型:判断题

穆斯林的三大节日是( )。

A.圣纪节

B.复活节

C.开斋节

D.古尔邦节

题型:判断题

When you walk along a street in a big city in the United States, you may see clocks in most stores. Radio announcers give the correct time during the day. People there think that it is important to know the time. Most Americans have watches. They want to do certain things at certain times. They do not want to be late. Not all people all over the world value time. Suppose you visit a certain country in South America. You would find that people living there do not like to rush. If you had an appointment(约会)with someone, he would probably be late. He would not care for arriving on time. In some countries in South America, even the radio programs may not begin right on time, nor do the radio announcers think it important to announce the right time. Many people regard a clock as a machine. It seems to them that a person who does everything on time is controlled(控制)by a machine. They do not want a clock or any machine to have that much power over their lives.

小题1:There are clocks in most stores in the US cities because ______.

A.people in the stores want to sell these clocks

B.people think it important to know the time

C.bosses want to make their stores beautiful

D.they needn't wear watches when they are away from home小题2:The underlined word “rush” in the passage most probably means ______.

A.“run”

B.“race”

C.“move”

D.“hurry”小题3:If you had an appointment with someone in some place in South America,he might not arrive on time,and this is because ______.

A.he didn't have a watch with him

B.he didn't think it important to arrive on time

C.he forgot to have a look at a watch or a clock

D.he didn't like an appointment with someone小题4:In some countries in South America ______.

A.the radio programs many start a bit early or late

B.the radio announcers do think it important to announce the exact time

C.many people think a clock has much power

D.most people do not want to be controlled by others

题型:判断题

如图,三棱镜的横截面为直角三角形ABC,∠A=30°,AC平行于光屏MN,与光屏的距离为L.棱镜对红光的折射率为n1,对紫光的折射率为n2.一束很细的白光由棱镜的侧面AB垂直射入,直接到达AC面并射出.画出光路示意图,并标出红光和紫光射在光屏上的位置,求红光和紫光在光屏上的位置之间的距离.

题型:判断题

载频接收校准时候需要下列哪些设备()

A、PC电脑

B、信号发生器

C、假负载

D、功率计

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