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【单选题】
被广泛应用于做人造卫星和宇宙飞船天线的是（ ）A.
钛镍记忆合金
B.
硬铝
C.
铝合金
D.
白铜
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】图纸的基本幅面有五种,分别用幅面代号A0、A1、A2、A3、A4表示,其中A0幅面尺寸为()。
A.
210x297
B.
420x297
C.
420x594
D.
1189x841
【简答题】用how many/how much填空。 ① _____ boys are there? ② _____ water is there?
【单选题】How did Madoff explain his investment strategy to press?
A.
The returns were just amazing and we trusted this guy for decades
B.
He was secretive about the firm’s business, the investment method was marked as “too complicated for outsiders to understand”
C.
Madoff’s annual returns were “unusually consistent”, around 10%
【单选题】图纸的基本幅面有五种,分别用幅面代号A0、A1、A2、A3、A4表示,其中A2幅面尺寸为()
A.
210x297
B.
420x297
C.
420x594
D.
594x841
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