更多"[简答题] I found $10 on the street."的相关试题:
[单选题]若i1=I1sin(ωt+Ψ1),i2=I2sin(ωt+Ψ2)。求i=i1+i2,则i和初相角Ψ为( )。
A.
B.
C.
D.
[单选题] New kinds of sicknesses have been found because. __
A.the human body has changed compared with(同……比较) human first appeared on the earth
B.the way we live has changed a little
C.our body can't deal with the changes in life style
D.the way we live today is proper for the human body
[单选题]Returning home, Jim found the back door open and something______ .
A.to steal
B.to be stolen
C.stealing
D.stolen
[单选题]两个正弦交流电流i1和i2的有效值I1=I2=4A。i1与i2相加后总电流的有效值仍为4A,则它们之间的相位差是()。(3501)
A.180°
B.120°
C.90°
D.60°
[判断题] 直流串联电路的总电流等于各支路电流之和,即I=I1+I2+I3+…+In。
A.正确
B.错误
[单选题]- I'm afraid I can't go to your party,I have an important exam tomorrow. ______
A. What a pity
B. With pleasure
C. No problem
D. Mind yourself
[判断题]体力劳动强度按劳动强度指数I大小分为四级,分别为:I级(I≤15);II级
(I=15-20);III级(I=20-25);IV级(I>25)。()
A.正确
B.错误
[单选题]执行下列程序后,i的值是()。
int i,x;
for(i=1,x=1;i<20; i++)
{if (x>=10) break;
if(x%2= =1)
{x+=5; continue; }
x-=3;
}
A.4
B.5
C.6
D.7
[单选题]当ωt=360°时,i1、i2、i3分别为( )
A.负值、正值、0
B.0、正值、负值
C.负值、0、正值
D.0、负值、正值
[单选题]如图所示电路中,流经三个电阻的电流分别为I1、I2 和I3。若已知R1、R2 和R3,则I1 /I3=( )
A.R3/(R1+R2)
B.R3/(R1+R2)R2
C.(R3+R2)/(R1+R2)
D.R3/R1
[单选题]I wonder if I could use your computer tonight?
______, I’m not using it right now.
A. sure, here you are.
B. I don't know.
C. It doesn't matter.
D. Who cares?
[单选题]一台微机的型号中含有i3、i5、i7等内容时,其含义是( )。
A.运算控制单元的档次
B.显示器大小
C.主存储器容量大小
D.硬盘容量大小
[填空题] 正常运行时,三段母线的进线开关处于( )位置;I、III段母联开关,I、II段母联开关和II、III段母联开关、III段柴油发电机进线开关均在( )位置。
[单选题]- I wonder if I could use your computer tonight? I'm not using it right now. ______
A. Sure, go ahead.
B. I don't know.
C. It doesn't matter
D. Who cares?
[单选题]While I was in the university, I learned taking a photo, ________ is very useful now for me.
A. it
B. which
C. that
D. what
[简答题]When I was young, I liked singing and dancing.