Coin collection is one of the oldest
known hobbies. In the past it was often enjoyed by kings and scholars. It is
also a pleasant way of saving. The designs (图案) on coins tell many stories. The coins of a country often are a record of its history and geography (地理) . Some old coins tell us all we know about a country or a period of history. Coins tell us about the art, dress and hairstyles (发型) of people who lived long ago. To get the most enjoyment from your hobby of coin collecting, read as much as you can on the subject. Try to form a group of collector friends. If you have an old or foreign coin, find out where and when it was made, its name and value, and what you could have bought with it when it was in use. Never clean a coin unle [单选题]两根直径分别为d
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B,两管道中流过同种流体,则它们的临界雷诺数( )。
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A.1 B.2 C.3 D.4 [判断题]保函期限届满需要展期的,视同出具新的保函业务流程办理,原保函原件收回做注销处理。
A.正确 B.错误 [单项选择]与病人交谈的正确方法是()。
A. 不要与病人有眼神的交流 B. 及时纠正病人叙述的内容 C. 适当点头或轻声说“是” D. 对病人谈话及时做出是非判断 E. 不断提问引导谈话的进行 [单选题]每年( )为全国“安全生产月”。
A.3月 B.6月 C.5月 [单选题]在职业生活中,必须牢固树立“()”的观念,通过劳动创造更加美好的生活。
A.劳动最光荣 B.劳动最崇高 C.劳动最伟大 D.劳动最美丽 E.答案错误,自行解答 我来回答: 提交
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