A laptop operates on battery pow

题目

A laptop operates on battery power when connected with an AC adapter. Once the battery discharges, the computer turns off and will not turn back on. Which of the following are the MOST likely causes of the laptop issue? ()(Select TWO).

  • A、The LCD monitor’s power inverter does not function properly.
  • B、The operating system’s power settings prevent the battery from charging.
  • C、The battery is not compatible with the laptop.
  • D、The internal power connection on the motherboard is faulty.
  • E、The power adapter is not working.
参考答案和解析
正确答案:D,E
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相似问题和答案

第1题:

下面程序的运行结果是( )。 define POW(r)r*r main() {int x=2,y=3,t; t=POW(x+y); printf("%d\n",t); }


正确答案:11
11

第2题:

Which of the following laptop hardware components requires a re-soldering process in order toreplace properly?()

A. Mini PCIe wireless card

B. Heat sink

C. DC jack

D. Li-Ion battery


参考答案:C

第3题:

若有代数式(其中e仅代表自然对数的底数,不是变量),则以下能够正确表示该代数式的C语言表达式是( )。

A.sqrt(abs(n^x+e^x))

B.sqrt(fabs(pow(n,x)+pow(x,e)))

C.sqrt(fabs(pow(n,x)+exp(x)))

D.sqrt(fabs(pow(x,n)+exp(x)))


正确答案:C

第4题:

为了延长连续2次功控的时间,可以调整下列()参数。

A.MAX_POW_RED

B.MAX_POW_INC

C.BS_P_CON_INT

D.POW_RED_STEP_SIZE


参考答案:C

第5题:

下列程序的运行结果是( )。 Public class sun { Public static void main(String args[]) { int x=4,y=0; if(Math.pow(X,2)= =16) y—x ; if(Math.pow(X,2)<15) y—l/x; if(Math.pow(X,2)>15) y=(int)Math.pow(X,2)+1; system.out.println(y); } }

A.4

B.17

C.18

D.0.25


正确答案:B
B。【解析】本题是考查对if-else分支结构和几个标准函数的理解。pow(x,y)方法是X的Y次幂,程序中pow(x,2)满足第1个if语句和第3个if语句,条件变量y将被赋值两次,但对于同一个变量来说,只能存储最后一个所赋的值。

第6题:

下列程序的运行结果是______。

define POW(r)(r)*?

main()

{ int x=3,y=2,t;

t=POW(x+y);

printf("%d\n",t);

}


正确答案:
解析: 本题考查带参数的宏的定义及相关运算。运算过程为:t=POW(x+y)=(2+3)*(2+3)=25。

第7题:

Which of the following is a common location of the CMOS battery in a laptop?()

A. Under the keyboard

B. Behind the removable hard drive

C. Under the removable CD drive

D. Behind the laptop battery


参考答案:A

第8题:

下列程序的运行结果是( )。 Publicclasssun { Publicstaticvoidmain(Stringargs[]) { intx=4,y=0; if(Math.pow(x,2)=16) y=X; if(Math.pow(x,2)<15) y=1/x if(Math.pow(x,2)>15) y=(int)Math.pow(x92)+1; system,out.println(y); } }

A.4

B.17

C.18

D.0.25


正确答案:B
解析: 本题是考查对if-else分支结构和几个标准函数的理解。pow(x,y)方法是x的y次幂,程序中pow(x,2)满足第 1个if语句和第3个if语句,条件变量y将被赋值两次,但对于同一个变量来说,只能存储最后一个所赋的值。

第9题:

pow(2,pow(3,2))的运行结果为?

A.9

B.8

C.81

D.512


正确答案:D

第10题:

A user reports that they walked away from their laptop for 30 minutes and when they came backthe screen was very dim. The user tried moving the mouse and increasing the brightness setting,but neither worked. Which of the following should the technician do FIRST?()

  • A、Plug in an external monitor to test the video card.
  • B、Run a check disk scan to verify there is no corruption.
  • C、Check if the laptop is now on battery power.
  • D、Have the LCD screen replaced with a known good screen.

正确答案:C

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