[多选题]变压器投运前需要做以下（）试验。
A.短路
B.甩负荷
C.核相
D.全电压空载冲击合闸

Just as the Corporate cowboys of the 1970s destroyed the reputation of the corporations they headed, and engaged in grand scale self indulgence at corporate expense, now Australia is in the era of the campus cowboy (and female counterpart). They too overstate the performance of their product and corporation, and indulge in grand scale self indulgence, despite their claims of academic excellence and projecting a holier than holy image.
Academics are put under various pressures to drop the standard of university education so that more students are retained through to graduation, thereby maximizing the revenue collected by governments of both persuasions and the more revenue handed back to the universities to fund the outrageous perquisites of senior management at those institutions.
Australian universities artificially boost student numbers by accepting many Australians who should not be allowed within 100 kilometers of a university on