引起自动调节系统被调量波动的因素叫干扰。
参考答案：对
Some parents are just too protective. They want to ______ their kids from every kind of danger, real or imagined.
A．spot
B．dismiss
C．shelter
D．distinguish
临床上固定矫治器一般（）
A.每天加力
B.间隔1周加力一次
C.间隔2～3周加力一次
D.间隔4～6周加力一次
E.间隔半年加力一次
