网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
A policeman has to keep ________ his toes all the time he's on duty.
A.at
B.to
C.on
D.in
参考答案
更多 “ A policeman has to keep ________ his toes all the time he's on duty. A.atB.toC.onD.in ” 相关考题
考题
He () some difficulty () the book into Japanese.
A、is, to translateB、has, to translateC、is, in translatingD、has, in translating
考题
AnRMANbackupjobfails,displayingthefollowingerrormessage:ORA19809:limitexceededforrecoveryfilesYouranalysisshowsthattheFlashRecoveryareaisfull.Whatwouldyoudotoresolvetheerror?()
A.increasethevalueofUNDO_RETENTIONB.changethevalueofWORKAREA_SIZE_POLICYtoAUTOC.increasethevalueofDB_RECOVERY_FILE_DEST_SIZED.increasethevalueofCONTROL_FILE_RECORD_KEEP_TIME
考题
AfteranumberofdayssetbytheparameterCONTROL_FILE_RECORD_KEEP_TIME,theinformationinthecontrolfileisoverwrittenbyRMAN.Whatisthisparameter’sdefaultvalue?()
A.1dayB.5daysC.7daysD.31days
考题
You are signing on a deck officer，who will be designated as one of the GMDSS operators，before sailing foreign．Which statement is TRUE ________．A.He/she must have an STCW certificate endorsed as“Valid for Service on Vessels Operating in the GMDSS System”B.He/she must present either an FCC-issued license or a Coast Guard-issued licenseC.You must consult the“List of Qualifications”on the reverse of his/her FCC-issued licenseD.His/her Merchant Mariners Document must have an added endorsement as “Radio Electronics Officer”
考题
The working parent is not willing to listen to her (his) four-year-old child talking about hissandbox games because she (he) is___________.A.boring
B.very tired
C.busy
D.angry
考题
--Where do you think______he______the computer?---Sorry．I have no idea．A.has;bought
B.不填;bought
C.did;buy
D.不填;buys
热门标签
最新试卷