当横向静稳定度过大，而方向静稳定度过小，在可能发生
A. 荷兰滚模态不稳定
B. 螺旋模态不稳定
C. 短周期模态不稳定
D. 长周期模态不稳定
当Ma数不变，H减小，则纵向短周期的自振频率变___，阻尼比变___。
A. 大；大
B. 大；小
C. 小；大
D. 小；小
模态特性参数主要有
A. 半衰期t1/2或倍幅时间t2
B. 周期T
C. 振荡次数N1/2或N2
D. 模态幅值比和相角差
@font-face { font-family: "Times New Roman"; }@font-face { font-family: "宋体"; }p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: "Times New Roman"; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }采用电传操纵系统后，飞机设计不能实现的是（ ）。
A. @font-face { font-family: "Times New Roman"; }@font-face { font-family: "宋体"; }p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: "Times New Roman"; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }放宽静稳定性
B. @font-face { font-family: "Times New Roman"; }@font-face { font-family: "宋体"; }p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: "Times New Roman"; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }光传操纵控制
C. @font-face { font-family: "Times New Roman"; }@font-face { font-family: "宋体"; }p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: "Times New Roman"; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }直接力控制
D. @font-face { font-family: "Times New Roman"; }@font-face { font-family: "宋体"; }p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: "Times New Roman"; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }机动载荷控制
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