單項(xiàng)選擇題

Which of the following computer recovery sites is the least expensive and the most difficult to test? 以下哪項(xiàng)計(jì)算機(jī)恢復(fù)站點(diǎn)是最便宜的和最難測(cè)試的?()

A.non-mobile hot site. 非移動(dòng)熱站
B.cold site. 冷站
C.warm site. 熱站
D.mobile hot site. 移動(dòng)熱站

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