更多"（）is electricity that is flowing wh"的相关试题:
[单项选择]When the temperature of the refrigerant flowing out from the condenser is below the condensing temperature, it is said to be （）.
A. dry
B. wet
C. super-cooled
D. superheated
[单项选择]While flowing through the volute in a centrifugal pump, part of the （） energy of the liquid is converted to （） energy.
A. kinetic；pressure
B. kinetic；essential
C. pressure；kinetic
D. pressure；height
[单项选择]Cold water flowing southward through the western part of the Bering Strait between Alaska and Siberia is joined by water circulating counterclockwise in the Bering Sea to form the（）.
A. Alaska Current
B. Subarctic Current
C. Kuroshio Current
D. Oyashio Current
[单项选择]The current flowing first in one direction and then in another is called（） current.
A. an alternating
B. a rush
C. a direct
D. an exciting
[单项选择]The points on the earth’s surface where the magnetic dip is 90° are（）.
A. Along the magnetic equator
B. Connected by the isoclinal line
C. The isopors
D. The magnetic poles
[单项选择]Blood flowing from a cut artery appears（）.
A. dark red with a steady flow
B. bright red with a steady flow
C. bright red and in spurts
D. dark red and in spurts
[单项选择]Current flowing in only one direction is called （）
A. alternating current
B. omnidirectional current
C. direct current
D. sinusoidal current
[单项选择]The liquid flowing in the capillary is such that the difference in （） readings taken before the capillary and after it is related to the oil viscosity.
A. pressure
B. velocity
C. flow rate
D. temperature
[单项选择]Usually, emergency electricity supplies to on board（）
A. Cargo winch
B. Windlass
C. Steering gear
D. Main air compressor
[单项选择]su - dbuser与su dbuser命令的区别为（）。
A. 执行完su - dbuser命令后，当前目录为dbuser用户的家目录，环境变量为dbuser用户的环境变量；执行完su dbuser命令后，当前目录不变，环境变量不变
B. 执行完su dbuser命令后，当前目录为dbuser用户的家目录，环境变量为dbuser用户的环境变量；执行完su - dbuser命令后，当前目录不变，环境变量不变
C. 以上都不对
[单项选择]Solid waste generation，and electricity and water consumption are costly and have their own set of environmental（）.
A. inspect
B. impairs
C. impacts
D. insects
[单项选择]Everyone knows where the shop is, but who's the owner? （）
A. Steve.
B. Everyone does.
C. At the next door.
D. Yes, it‘s a secret.
[单项选择]If you must make an electricity connection in a poorly accessible spot, solder it and seal it against （）
A. metal
B. wood
C. water
D. plastic
[单项选择]What is the BEST conductor of electricity（）.
A. Carbon dioxide
B. Distilled water
C. Fresh water
D. Salt water
[单项选择]Electricity （） by the Greeks a good many years ago.
A. was first found
B. was first discovered
C. has first been discovered
D. was seen first
[单项选择]Static electricity may be built up by the（）.
A. flow of petroleum through pipes
B. spraying or splashing of petroleum
C. settling of solids or water in petroleum
D. All of the above
[单项选择]在基表S中查询所有姓名中有“国”的学生，在WHERE子句中应使用（）通配符。
A. LIKE’%国%’
B. LIKE‘%国_’
C. LIKE’_国%’
D. LIKE‘_国_’
[单项选择]Which term describes piston pins having bearing surfaces in both the piston bosses and connecting rod eye?（）
A. Stationary
B. Full floating
C. Semi-floating
D. Free rolling
