边长为5的正方形EFGH是圆柱的轴截面,求从点E沿圆柱的侧面到相对

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问题解答题

边长为5的正方形EFGH是圆柱的轴截面,求从点E沿圆柱的侧面到相对顶点G的最短距离.

答案

如图,矩形E₁F₁GH是圆柱沿着其母线EF剪开半个侧面展开而得到的,

由题意可知GH=5,,.∴从点E沿圆柱的侧面到相对顶点G的最短距离是.

补全对话，情景问答

根据语境。填人适当的词语或句子补全对话。

A: Where are you from?

B: I'm from Korea.

A: What are 1. manners in your country?

B: Korea is a country famous for its many native dishes. 2. food is rich in nutrition, well-balanced

and low in calories. They say that you can eat as much Korean food as you like and never gain weight.

A: Wonderful. I eat 3. . I like to eat nice things and keep slim at the same time,

B: Come to Korea then.

A: Is Korean food chiefly made of 4. ?

B: Yes, it is. Seasonings include garlic, red peppers, scallions, soy saucey fermented bean paste, ginger

and sesame oil.

A: 5. . the old or the young?

B: Of course, the oldest eat first. They are respected most in our country.

填空题

基站开通中的参数LAPDLE用来标识BSC和BSTE通信时在Abis上用的时隙，它的设置要与BSC数据库参数（）一致。