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入瞳孔径越大,则景深越 ;对准平面距离越远,则景深越 。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
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【简答题】选择方框中适当的句子完成对话。(Ling ling要去英国学习，她向她的网友Mary了解英国的有关礼仪。) Ling ling: I'm going to England as an exchange student. Mary: Great! Ling ling: But I don't know much of the customs and manners in England. _____...
【简答题】完成对话。 玲玲要去英国学习，她向她的网友玛丽了解英国的有关礼仪。 Ling Ling: I'm going to England as an exchange student. Mary: Great! Ling Ling: But I don't know much of the customs and manners in England. ___ 1 __. Mary: Sure. Lin...
【简答题】建筑材料钢材试验取样,切取样坯时,应防止因__、__及__而影响其力学及工艺性能。
【单选题】完成对话: Lucy: Welcome!( ) Miss Ling: Yes, can you introduce the logo of Benz to me, please.
A.
May I help you?
B.
what's the price?
C.
Today I'd like to show you an new model.
【简答题】反复烧开的水含亚硝酸盐，不宜饮用。
【单选题】听力原文：W: Good morning. Complaints Department. M: Yes. I'd like to speak to Miss Wang. W: Excuse me, sir. We have a bad connection. Could you speak a little more slowly? M: I-want-to-speak-to-Miss-Wang....
A.
They are talking about some returned items.
B.
One is making a complaint to the other.
C.
They are having a chat.
D.
The man is speaking in a low voice.
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