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【简答题】
已知抛物线y 2 =-2px（p＞0）的焦点F恰好是椭圆 x 2 a 2 + y 2 b 2 =1 的左焦点，且两曲线的公共点的连线过F，则该椭圆的离心率为______．
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反馈参考答案：
举一反三
【单选题】It is reported that publc interest in environmental issues tends to ________ during the financial crisis.
A.
wame
B.
wane
C.
wax
D.
hoe
【简答题】Molisch反应的试剂组成是
【单选题】在量程为0 〜 100°C的在杠杆气动差压变送器中,零点调整后,当输入温度为100°C时,变送器输出为0.09MPa,为使暈程符合要求,必须________。
A.
扭动调零弹簧,使挡板靠近一点喷嘴
B.
上移反馈波纹管
C.
扭动调零弹簧,使挡板离开一点喷嘴
D.
下移反馈波纹管
【单选题】关于02E变速箱离合器间隙计算公式描述正确的是（）
A.
离合器膜片间隙值-输入轴间隙值+1.85mm
B.
间隙分为K1和K2两个间隙值
C.
不可以同时调整K1和K2间隙
D.
调整间隙时必须使用深度游标卡尺
【单选题】Prisha has not kept accurate accounting records during the financial year. She had opening inventory of $6,700 andpurchased goods costing $84,000 during the year. At the year end she had $5,400 left i...
A.
$13,750
B.
$17,060
C.
$16,540
D.
$20,675
【简答题】anna has not kept accurated account records during the financial year.she had opening inventory of $6700 and purchased goods costing $84000 during the year.at the year end she had $5400 left in invent...
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