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问题 单项选择题

天然气管线按金属腐性破坏的形式分类，以下正确的是（）

A、化学腐蚀和电化学腐蚀

B、均匀腐蚀和局部腐蚀

C、化学腐蚀和物理腐蚀

D、均匀腐蚀和全面腐蚀

答案

参考答案：B

单项选择题

Jolene began building a picket fence by planting stakes in a row; the stakes were evenly spaced. After planting the first 10 stakes, Jolene measured the length of the row and found that the row was 27 feet long. She continued the row by planting another 10 stakes, then measured the length of the entire row. How many feet long was the row of stakes Jolene had planted

A．37

B．54

C．57

D．60

E．(E) 81
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单项选择题

以体能活动为引导的人格训练方法是（）。

A.情景模拟

B.拓展训练

C.文件筐法

D.体能训练
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