题目内容

背越式跳高技术由（）（）（）（）四个部分组成。

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跳高技术中助跑开始采用弧线跑然后采用直线跑。

A. 对
B. 错

尚老师讲解有关演讲PPT制作的原则有（）

A. 结构清晰
B. 用图表说话
C. PPT数量要合理
D. 文字简洁醒目

With the availability and ease of use of circuit simulation software , it is easy to simulate circuits before they are built.

A. 可用性
B. 易用性
C. 仿真电路
D. 电路仿真软件

In this way it is much faster to construct working circuits as it is possible to design the circuit andoptimize its operation before it is even built. By doing this, electronics design can be much faster, more accurate and much cheaper.

A. 在电路建成之前
B. 优化电路运行
C. 更准确
D. 电子设计