Anofficelaserprinterisprintinglighterinrandomareas.WhichofthefollowingistheEASIESTsolutiontoimplementforthisissue?()
A. Cleanthedrumwithacomputervacuum.
B. Replacethetonercartridge.
Cleanthefuserareawithalintfreecloth.
D. Useacanofcompressedairtocleanthepickupassembly.
国家司法机关依据法定职权和程序具体运用法律处理专门案件的活动,称为()
A. 立法
B. 守法
C. 司法
D. 法律监督
AtechnicianisattemptingtoconfigureWindowsXPMediaCenteronadesktopfromaCD.The messagethatcomesuponthescreensays‘MissingNTLDRpressanykeytoreboot’. WhichofthefollowingshouldthetechniciandoNEXT?()
A. Replacethevideocardwithacompatibleone.
B. ChecktheWindowsXPHardwareCompatibilityList.
C. VerifythebootorderintheBIO
D. InstallWindowsXPRC2first,thenupgradetoWindowsXPMediaCenter.
在一元线性回归中判定系数等于()的平方。
A. 相关系数
B. 回归系数
C. 估计标准误
D. 总方差