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装设临时接地线就先装低压、后装高压，先装下层、后装上层;拆除时顺序相反。

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关于航空运输的特点，下列说法中错误的是 ()

A. 安全性能高
B. 不受地面限制
C. 货物破损率大
D. 交货速度快

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Ms. Morrison has made significant contributions to Systech Company throughout______15 year

A. she
B. her
C. hers
D. herself

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按照原招标文件报一价，然后提出修改原设计方案，提出投标者的方案，并据此报价，这种报价技巧称之为()。

A. 无利润算标
B. 多方案报价法
C. 增加建议方案法
D. 可供选择的项目的报价

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Based on Student 1’s discussion and Fact 4, while matter flowed between Algol A and Algol

A. hydrogen nuclei to make helium nuclei at its center.
B. hydrogen nuclei to make helium nuclei in a shell surrounding its center.
C. helium nuclei to make hydrogen nuclei at its center.
D. helium nuclei to make hydrogen nuclei in a shell surrounding its center.

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