问题
填空题
做一节底面直径为20厘米,长90厘米的烟筒,至少需要______平方分米铁片.
答案
1平方分米=100平方厘米,
3.14×20×90,
=62.8×90,
=5652(平方厘米),
5652平方厘米=56.52平方分米;
答:至少需要56.52平方分米铁皮.
故答案为:56.52.
做一节底面直径为20厘米,长90厘米的烟筒,至少需要______平方分米铁片.
1平方分米=100平方厘米,
3.14×20×90,
=62.8×90,
=5652(平方厘米),
5652平方厘米=56.52平方分米;
答:至少需要56.52平方分米铁皮.
故答案为:56.52.
阅读理解 | |
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1. The reading above is in fact ________. | |
A. an advertisement B. a report C. a notice D. an invitation | |
2. When you are accepted, you'll work for ________. | |
A. a radio station B. a TV station C. a newspaper office D. a magazine | |
3. You may get the position if ________. | |
A. you have similar working experience B. you can only speak English C. you are good at shooting camera D. you are short of confidence | |
4. How can you get in touch with travelogue? | |
A. By chatting online. B. By posting letters. C. By sending emails. D. By making phone calls. | |
5. If you are interested in the job, you must send your CV before ________. | |
A. May 2 B. May 13 C. May 18 D. May 21 |