华为的OLT和ONU在衰减预算方面采用哪种标准（）。A、ClassA B、Class_爱下问搜题

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问题单项选择题

华为的OLT和ONU在衰减预算方面采用哪种标准（）。

A、ClassA

B、ClassB

C、ClassB+

D、ClassC

答案

参考答案：C

改错题

短文改错
    此题要求改正所给短文的错误。对标有题号的每- 行作出判断：
   如有错误(每行只有- 个错误), 则按下列情况改正：
    该行多- 个词：把多余的词用斜线(＼)划掉, 在该行右边横线上写出该词, 并也用斜线划掉。
    该行缺- 个词：在缺词处加- 个漏字符号(∧), 在该行右边横线上写出该加的词。
    该行错- 个词：在错的词下划- 横线, 在该行右边横线上写出改正后的词。
    注意：原行没有错的不要改。

Yesterday afternoon, my parents and I go to the
supermarket near my home to buy some food. In the
way back home; I saw several teenager of my age
wandering aimless around the square. They were shaking
with cold and looked even if they were very hungry. It was
such a cold night that I felt pity for him. I remembered
a food we had bought and gave it to them. Then we walked
home silently. I felt happy to be able to give others hand.
My parents

also felt very proud at me. They said we should
do all we could to helping people who are in difficulty.

1. _____
2. _____
3. _____
4. _____
5. _____
6. _____
7. _____
8. _____
9. _____
10. _____

问答题简答题

试解释解放牌汽车CA1091用的6－QA－100型铅蓄电池型号的意义。