The information _______ by us in strict confidence is of value.
A.offered
B.informed
C.provided
D.provided with
正确答案是C
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上一篇:他励直流电动机励磁方式如题38图所示,已知PN=2.2KW,UN=UfN=110V,ηN=0.8,Ra=0.4Ω,Rf=82.7Ω。试求: (1)额定电流IN及额定励磁电流IfN: (2)额定状态时的反电动势E。 Passage Five Art is considered by many people to be little more than a decorative means of giving pleasure. This is not always the case; however, at times, art may be seen to have a purely functional side as well. Such could be said of the s
他励直流电动机励磁方式如题38图所示,已知PN=2.2KW,UN=UfN=110V,ηN=0.8,Ra=0.4Ω,Rf=82.7Ω。试求: (1)额定电流IN及额定励磁电流IfN: (2)额定状态时的反电动势E。 Passage Five Art is considered by many people to be little more than a decorative means of giving pleasure. This is not always the case; however, at times, art may be seen to have a purely functional side as well. Such could be said of the s