问题
单项选择题
千兆以太网标准于1998年6月获得批准，它为三种传输媒质定义多种收发器，其中（）是用于安装单模光纤
A、1000Base-LX
B、1000Base-SX
C、1000Base-CX
D、1000Base-T
答案
参考答案：A
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千兆以太网标准于1998年6月获得批准，它为三种传输媒质定义多种收发器，其中（）是用于安装单模光纤
A、1000Base-LX
B、1000Base-SX
C、1000Base-CX
D、1000Base-T
参考答案：A
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| Are your table manners much better when you are eating at a friend's home or in a restaurant than they are at your own home? Probably so. 1 you are aware that people judge you by your table manners. You take special pains when you are eating 2 . Have you ever stopped to realize how much less self-conscious you would be on such occasions if 3 table manners had become a habit for you? You can make them a habit by 4 good table manners at home. Good manners at mealtimes help you and those around you to feel 5 . This is true at home as much as it is true in someone else's home or in a restaurant. Good 6 make meals more enjoyable for everyone at the table. By this time you probably know quite well what good table manners are. You 7 that keeping your arms on the table, talking with your 8 full and wolfing down your food are not considered good manners. You know also that if you are mannerly, you say "please" and "Thank you" and ask for things to be passed to you. Have you ever thought of a pleasant attitude as being 9 to good table manners? Not only are pleasant mealtimes enjoyable, but they aid digestion. The dinner table is a 10 for enjoyable conversation. It should never become a battleground. You are definitely growing in social maturity (成熟) when you try to be an agreeable table companion. | ||||
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