下列说法正确的是
A. 弯矩为零，挠度为零
B. 弯矩为零，转角为零
C. 弯矩为零，变形为零
D. 弯矩为零，曲率为零
下列说法不正确的是
A. 积分常数除以弯曲刚度是坐标原点的位移。
B. 简支梁挠曲线无拐点，可以用跨中挠度代替最大位移。
C. 挠曲线方程得一阶导数，为转角方程
D. 挠曲线方程得二阶导数，为弯矩方程
Which of the following statements is true of people involved in the leadership relationship?
A. They share a passive relationship.
B. They seek changes dictated by leaders.
C. They intentionally desire significant changes.
D. They use coercion to bring about change.
An important aspect of leadership is:
A. dictating changes required in an organization.
B. maintaining a passive relationship with followers.
C. maintaining the status quo and not creating change.
D. influencing others to come together around a common vision.
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