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【判断题】
某三相变压器其的联结组别为Dyn11，其含义为一次绕组为三角形接法，二次绕组为星形接法，无中性线引出，高低压侧对应额定电压的相位差为300度。A.
正确
B.
错误
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举一反三
【单选题】If a person's eye has been looking at an object in bright sunlight for some time, and then shifts to an object not well lit--such as a lawn or shrub in shadow--we can expect ______.
A.
a time lag in the focusing ability of the eye
B.
some inability to see colors of the latter-named objects until loss of sensitivity has been regained
C.
the immediate loss of the 'afterimage' of the first object
D.
adaptation in the central area of the eye but little adaptation in the lateral areas to the new intensity level
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