The future of a nation depend _______________ upon on the quality of education and training.
A. on the large scale
B. in the end
C. on the other hand
D. in a large measure
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The policy is designed to prevent the __________ of one group over another.
A. timidity
B. predominance
C. commitment
D. pessimism
Our ________ comes from the constant study of the whole group.
A. control
B. vigor
C. ideal
D. immortality
When your spirit is covered with snows of _________ and the ice of pessimism, then you are grown old, even at 20.
A. optimism
B. happiness
C. cynicism
D. pleasure
变压器联结组别Yd11中,d表示的含义是什么()?
A. 高压绕组用星型联结
B. 高压绕组用三角形联结
C. 低压绕组用星型联结
D. 低压绕组用三角形联结