电缆填充装置
参考答案:将液体、半液体或粉末状等填充剂填入电缆芯或空隙的工艺装置。
根据下列条件,求圆的方程:
(1)过点A(1,1),B(-1,3)且面积最小;
(2)圆心在直线2x-y-7=0上且与y轴交于点A(0,-4),B(0,-2).
President Obama has said that he had discussed his administration’s desire for _____ orderly change to _____ more open government in Egypt.
A./; the
B.an; a
C.the ; /
D.the ;an