【单选题】电路如下图所示,若电流源的电流 ,则电路的功率情况( )。
【单选题】We went back to the street and to the house, in front of ______ we had found the BlackBerry cellphone.
【单选题】Which of the following is a principle that can improve the efficiency of I/O?
A.
Increase the number of context switches.
B.
Use small data transfers
C.
Move processing primitives into hardware
D.
Decrease concurrency using DMA controllers
【判断题】用万用电表测量电路中的电流时,首先根据被测电路的电流大小选择适当量程,若不知测量电路的电流大小时,应把量程选择开关放在最大位置。 ( )
【判断题】We found all the rivers seriously to pollute.()
【单选题】From: The Managing Director, To: All Office Staff Date: 27 April, 2009 Subject: Efficiency of Productivity in the Office As a result of the productivity survey carried out in the factory, more rapid a...
A.
To install the coffee machine in the offices of each divisions
B.
To ask the suggestions as to how to improve the office productivity
C.
To improve the office productivity
D.
To ask the office staff to improve the office productivity
【简答题】读等高线地形图,回答下列问题: (1)图中大青山顶峰的海拔是______米,小青山顶峰的海拔是______米,大青山顶峰比小青山顶峰高______米. (2)图中甲地坡度比乙地______,原因是______. (3)图中比例尺改用文字式表示,图上1厘米代表实际距离______千米. (4)填出以下代码表示的地形部位名称: AB线是______,CD线是______, 丙处是______,丁处是_...
【单选题】We found the house that they offered us was not bigenough _______ so many people.
【单选题】电路如图所示 , 若电流源的电流 A, 则电路的功率情况为
D.
电阻无作用 , 电压源吸收功率 , 电流源供出功率