When it came to setting up my business, this was an invaluable lesson…
A. When referring to
B. When it arrived at
C. While it reached
D. While talking of
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In work environments I craved freedom and creativity…
A. longed for
B. fought for
C. hunted for
D. called for
以下关于步进电机说法错误的是（）
A. 步进电机是一种将电脉冲信号转换成相应角位移或线位移的电动机。
B. 步进电机每输入一个脉冲信号，转子就转动一个角度或前进一步，其输出的角位移或线位移与输入的脉冲数成正比，转速与脉冲频率成反比。
C. 步进电机和伺服电机都是通过脉冲控制，但其控制方式不同。
D. 步进电机输出力矩随转速升高而下降，且在较高转速时会急剧下降，一般不具有过载能力
高职新生面临的新变化有哪些？
A. 生活环境的变化
B. 学习环境的变化
C. 人际环境的变化
D. 管理环境的变化
Why did the author think she was not “leader material”? Because _____.
A. she is unable to talk with others.
B. she is deficient in courage.
C. she is meek, shy and silent.
D. she doesn’t like to be a leader.
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