动力换档变速箱中离合器是靠()接合,()分离。
A、齿轮,弹簧;
B、压力油,弹簧;
C、齿轮,压力油;
参考答案:B
Write a passage of at least 60 words on the topic 'The most shocking news to me'.
(以“最令我震惊的新闻”为题写一篇不少于60个词的作文,标点符号不占格。)
Suggested questions:
• What's the most shocking news to you?
• Why do you think it's the most shocking news?
• What's your opinion about the news?
飞艇双副气囊的作用是()
A.调节飞艇前后平衡
B.保持艇囊内部压力,防止炸囊,并保持艇型
C.以上都是