What is the FIRST step in diagnosing a completely dead computer that was working fine the day before？（）A、remove all peripherals and reinstall them one at a timeB、replace the CMOS batteryC、check the AC power cord and verify the power sourceD、back up the entire hard drive
What is the FIRST step in diagnosing a completely dead computer that was working fine the day before？（）
- A、remove all peripherals and reinstall them one at a time
- B、replace the CMOS battery
- C、check the AC power cord and verify the power source
- D、back up the entire hard drive
相关考题：
ARDS的血气特征是A.Fi+0.50,Pa+300mmHg,PaC+30mmHgB.Fi+0.50,Pa+92mmHg,PaC+54mmHgC.Fi+0.50,Pa+63mmHg,PaC+28mmHgD.Fi+0.50,Pa+380mmHg,PaC+40mmHgE.Fi+0.50,Pa+180mmHg,PaC+74mmHg
慢性阻塞性肺气肿的血气特征是A.Fi+0.50,Pa+300mmHg,PaC+30mmHgB.Fi+0.50,Pa+92mmHg,PaC+54mmHgC.Fi+0.50,Pa+63mmHg,PaC+28mmHgD.Fi+0.50,Pa+380mmHg,PaC+40mmHgE.Fi+0.50,Pa+180mmHg,PaC+74mmHg
用动态规划方法求解0/1背包问题时，将“用前i个物品来装容量是X的背包”的0/1背包问题记为 KNAP(1,i,X)，设fi(X)是KNAP(1,i,X)最优解的效益值，第j个物品的重量和放入背包后取得效益值分别为Wj和巧Pj(j=1～n)。则依次求解f0(X)、f1(X)、…、fn(X)的过程中使用的递推关系式为(58)。A．fi(X)=min{fi-1(X),fi-1(X)+pi}B．fi(X)=min{fi-1(X),fi-1(X-wi)+pi}C．fi(X)=max{fi-1(X),fi-1(X-wi)+pi}D．fi(X)=max{fi-1(X-wi),fi-1(X)+pi}
如图所示，圆轮的惯性力系向轮心C点简化时，其主矢F1和主矩MIC的数值分别为：A.FI=0，MIC=0B.FI=ma,MIC=1/2mRaC.FI=ma,MIC=3/4mRaD.FI=ma,MIC=1/4mRa
汉德森-海森巴赫(Henderson-Hasselbalchh)方程(HH方程)对弱有机酸药物的方程式是 A . pH-pKa=logfu/fi B . pKa-pH=logfu/fiC. pH-pKa=fu/fi D . pH-pKa=fi/fu E . pKa-pH=log(l-fu/fi)
电流、电压互感器与单相有功表合用时，互感器的合成误差为）（）（电流互感器比差为fI，角差为α，电压互感器比差为fU，角差为β）。A、fI＋fU＋（α＋β）tgφB、fI＋fU＋0.029（α＋β）tgφC、fI＋fU＋0.029（α－β）tgφD、fI＋fU＋0.029（α－β）ctgφ
Wi-Fi Protected Access was an interim step on the way to the more secure WPA2. What was added in WPA2 to make it more secure？（）A、 PEAPB、 EAP-FASTC、 AES encryptionD、 Rivest Cipher 4 encryption
下列关于Wi-Fi的叙述，错误的是（）A、Wi-Fi是一种能够将个人电脑、手持设备等终端以无线方式互相连接的技术B、Wi-Fi是有线网的补充和延伸C、Wi-Fi信号就是移动通讯信号D、Wi-Fi泛指符合IEEE 802.11标准的无线网络
根据汽车行驶方程可知，当汽车要加速行驶时，汽车驱动力与行驶阻力的关系应是（）。A、Ft=Ff+Fi+Fw+FjB、FtFf+Fi+Fw+FjC、Ftf+Fi+Fw+FjD、Ft≠Ff+Fi+Fw+Fj
What Wi-Fi 802.11 standards are supported on the Cisco SRP 500 Series？ （）A、 802.11 aB、 802.11 a/bC、 802.11 a/b/g/nD、 802.11 b/g/n
单选题What should be done if Cisco Spectrum Expert Wi-Fi reports a channel utilization of 40 percent onchannel 36， from a source outside of the site？（）AReport the problem to the FCCBReport the problem to the FAACRemove channel 36 from the DCA channel listDConfigure channel 36 to bond to channel 40 for a 40Mhz 802.11n channel
单选题What Wi-Fi 802.11 standards are supported on the Cisco SRP 500 Series？ （）A 802.11 aB 802.11 a/bC 802.11 a/b/g/nD 802.11 b/g/n
单选题Wi-Fi Protected Access was an interim step on the way to the more secure WPA2. What was added in WPA2 to make it more secure？（）A PEAPB EAP-FASTC AES encryptionD Rivest Cipher 4 encryption
单选题诊断ALI时应（ ）APaO2/Fi0300B200PaO2/Fi0300C200PaO2/Fi0400DPaO2/Fi0200EPaO2/Fi0100