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【简答题】
迅速拉长电弧，可使弧隙的电场强度（）降，离子负荷迅速（），从而加速电弧的熄灭。这种灭弧方法是开关设备中普遍采用的最基本的一种灭弧法。
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A.
complaint
B.
apology
C.
invitation
D.
business
【单选题】It’s necessary to be prepared for a job interview, ( ) the answers ready will be of great help.
A.
to have had
B.
having had
C.
have
D.
having
【单选题】It’s necessary to be prepared for a job interview. the answer ready will be of great help.
A.
To have had
B.
Having had
C.
Have
D.
Having
【单选题】43-4. 下列商品按照价格敏感性从强到弱排序 ( )
A.
牙膏- 牙刷 - 刷牙杯-漱口水
B.
漱口水- 牙膏- 牙刷 - 刷牙杯
C.
刷牙杯- 漱口水- 牙膏- 牙刷
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【单选题】It’s necessary to be prepared for a job interview. the answers ready will be of great help.
A.
To have had
B.
Having had
C.
Have
D.
Having
【简答题】Of course it took a while for such a big project to get started, but it was planned in the 60s, built in hte 70s and ually opened to the public in 1930. Ever since then it has proved to be a grea...
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