当失步振荡中心在发电机－变压器组内部时，应立即（）发电机。
参考答案：解列
学生原有的知识水平或者心理发展水平对新的学习的适应性称之为______。
Preliminary estimation puts the figure at around $110 billion,（）the $160 billion the President is struggling to get through the Congress.
A.in proportion to
B.in reply to
C.in relation to
D.in contrast to
