问题
单项选择题
T568A标准规定的线序是（），T568B标准规定的线序是（）。
T568A标准规定的线序是（）
A．白橙；橙；白绿；蓝；白蓝；棕；绿；白棕
B．白橙；橙；白绿；蓝；白蓝；绿；白棕；棕
C．白橙；橙；白绿；绿；蓝；白蓝；白棕；棕
D．白绿；绿；白橙；蓝；白蓝；橙；白棕；棕
答案
参考答案：D
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T568A标准规定的线序是（），T568B标准规定的线序是（）。
T568A标准规定的线序是（）
A．白橙；橙；白绿；蓝；白蓝；棕；绿；白棕
B．白橙；橙；白绿；蓝；白蓝；绿；白棕；棕
C．白橙；橙；白绿；绿；蓝；白蓝；白棕；棕
D．白绿；绿；白橙；蓝；白蓝；橙；白棕；棕
参考答案：D
| 阅读理解。 | |
| Peter King, 15, Mary King, 13, went to see a doctor. Peter had a bad cold, so the doctor gave him some pills to take. Mary had a cough, so the doctor gave her some cough medicine. These are the words on the bottle of the medicine: | |
| |
| 1. Mary should take in a day. | |
[ ] | |
| A. 2 teaspoonfuls B. 3 teaspoonfuls C. 4 teaspoonfuls D. 1 teaspoonful | |
| 2. The medicine should be kept in . |
[ ] |
| A. a refrigerator B. hot water C. any place D. the sun |
| 3. Mary should before she takes some. |
[ ] |
| A. shake the medicine well B. eat her meals C. shake the medicine gently D. drink something |
| 4. People aged cannot take this medicine. |
[ ] |
| A. 4.5 B. 13 C. 5 D. 2 |
| 5. Mary or her mother should the medicine left after Aug. 1994. |
[ ] |
| A. throw away B. take 2 times C. stop to take D. take 3 times more |