单选题The generators on your rig have shut down，leaving you without navigation lights. Which emergency signal would you transmit over the VHF radio to alert vessels in the area of your predicament? （）A Mayday，Mayday，MaydayB Pan，Pan，PanC Security，Security，Sec

This is very important. You_____remember to shut down your computer every

evenlng。

A. ought

B. need

C. must

D. can

You have three production databases, HRDB, FINDB, and ORGDB, that use the same ASM instance. At the end of the day, while all three production database instances are running, you execute the following command on the ASM instance :SQL> shutdown immediate;What is the result of executing this command?（）

A. The ASM instance is shut down, but the other instances are still running.

B. It results in an error because other database instances are connected to it.

C. All the instances, including the ASM instance, are shut down in the IMMEDIATE mode.

D. HRDB, FINDB, and ORGDB instances are shut down in the ABORT mode and the ASM instance is shut down in the IMMEDIATE mode.

(A) shut down

(B) shut up

(C) shut off

(D) shut away

A、wrote

B、had written

C、write

D、have written

20． You can find your way back to your branch room easily without leaving any branches as you walk．

Of all the websites, one that has attracted attention recently is my . Most of this attention has come from the hacks is indeed a tough reality, shutting down the site is not the answer. If my shut down, another site would place. Therefore, the right way is to teach teens how to use the site safely and educate them .One of the good way is to change the privacy setting on your profile to “private” actually post their home and school addresses, date of birth, and so on, often predators know exactly where they will be The most information that is safe is your first name and province. Anything more is basically life.Another big problem is photos. I suggest skipping photos and never posting a photo of a friend online without his or her how well you think you know this person. There are no guarantees that they have told the truth.

1. Most of this attention has come from the hacks is indeed a tough reality, shutting down the site is not the answer. {T; F}
2. One of the good way is to change the privacy setting on your profile to “private” actually post their home and school addresses, date of birth, and so on. {T; F}
3. If my shut down, another site would place. Therefore, the right way is to teach teens how to use the site safely and educate them . {T; F}
4. Another big problem is photos. I suggest skipping photos and posting a photo of a friend online without his or her how well you think you know this person. {T; F}
5. There are no guarantees that they have told the truth. {T; F}