比例调节器的输出只取决于输入偏差量的现状，而积分调节器的输出则包含了（）的全部历史。
参考答案：输入偏差量
The plane of the Polish president was about to land ______ it snagged(挂) treetops and crashed, ______ the president and 96 others on board.
A．while, killed
B．when, killing
C．and, and killed
D．when, to kill
骨巨细胞瘤的特点或MRI表现是
A．多在10岁以下
B．多位于骨干
C．起源于纤维组织
D．偶见液-液平面
E．无恶性者
