问题
单项选择题
马赫配平作动筒调节（）
A.扰流板
B.副翼
C.水平安定面
D.升降舵
答案
参考答案：D
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马赫配平作动筒调节（）
A.扰流板
B.副翼
C.水平安定面
D.升降舵
参考答案：D
| 用方框中所给单词的适当形式填空，使短文正确、通顺。每词限用一次。 | |
start a special day 1 Buy Nothing Day. They don't want anyone to go 2 on that day. Buy Nothing Day is on November 29. It is 3 Thanksgiving. Often, before Christmas we see many ads. in 4 and on TV 5 us to "buy, buy, buy!" The idea for Buy Nothing Day 6 in Vancouver, Canada. Now people all over the world 7 Buy Nothing Day. In California, the U.S., 8 and children get 9 to read stories, sing songs and draw pictures. The children talk about 10 they can't get many toys. |
