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【单选题】
汽车上常使用各种电磁开关，如继电器和起动机的电磁开关、机械式电压调节器等，这些开关用到电磁场的相关原理，下面关于电磁铁磁场强度的说法哪个是错误的？（）A.
流过线圈的电流越大，磁场越强
B.
线圈的匝数越多，磁场越强
C.
磁场的强弱与线圈长度、直径大小、有无铁心以及导体切割磁力线的角度有关
D.
线圈的匝数越少，电流越大，磁场越强
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【简答题】拨打电话应选择恰当的( ),以不影响对方工作和休息为宜。
【单选题】What's the ultimate purpose of strength-training with weights?
A.
To increase the pace of your aerobic exercise.
B.
To burn more calories and lose weight.
C.
To build muscle and lose weight.
D.
To shape your body and make your life more enjoyable.
【单选题】What does the writer imply in the fourth paragraph?
A.
Organizations can increase communication and disseminate adequate information about the change to employees．
B.
Organizations can help employees through training and educating them on how to cope with stress．
C.
Organizations can create a supportive environment at the workplace and it is vital that both superiors and colleagues play a part．
D.
That would be beneficial for the company if the employees are in a good state of psychological and emotional well-being，instead of being overly stressed or burned out．
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