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【多选题】
You are working on an Oracle Database 10g database. You enabled the Flashback Database feature. Which two statements regarding flashback logs are true？ （）A.
Flashback logs are not archived.
B.
Flashback logs are maintained in redo log files.
C.
Flashback logs are maintained in the Flash Recovery Area.
D.
Flashback logs are used to maintain Flashback Database related errors.
E.
Flashback logs need to be cleared manually after you disable Flashback Database.
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【简答题】What expressions can you find from the video for asking someone on the phone?
【单选题】If you can ______ a second, I'll look for Bob and tell him you are on the phone for him.
A.
hang out
B.
hang up
C.
hang about
D.
hang on
【单选题】You on the phone for an age. Haven't you nearly finished?
A.
have talked
B.
have been talking
C.
were talking
D.
had talked
【单选题】____Greet someone you never met but you've been talking to on the phone for months.
A.
This is Mrs Davis. She is in charge of exports.
B.
Hi! How are you?
C.
Good morning. Pleased to meet you.
D.
Nice to meet you at last!
E.
Good to see you again!
F.
I'm sorry I didn't catch your name. Can you say it again?
【单选题】If you can ____ a second, I’ll look for Bob and tell him you are on the phone for him.
A.
depend on
B.
hang on
C.
come back
D.
take along
【单选题】Choose the most suitable expression for situation---Greet someone you never met but you’ve been talking to on the phone for months.
A.
Good to see you again.
B.
Good morning. Pleased to meet you.
C.
Nice to meet you at last.
D.
Hi! How are you?
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