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【简答题】
P-N结反偏是把外接电源的正极接在P-N结的_极、负极接在P-N结的_极。
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举一反三
【单选题】听力原文： More than a quarter of the world adult population are still unable to read and write. They are called illiterates. A worldwide campaign to change this situation has been launched by the United N...
A.
More than 1/3.
B.
More than 1/5.
C.
More than 1/4.
D.
A little Jess than 1/4.
【简答题】Most people in Britain live in small family groups. More than a quarter of homes in Britain have only one person living in them. Some of these persons are old but some are of twenty to thirty who choo...
【简答题】Questions 15 to 18 are based on the following dialogue happened in a bookstore. Why didn't the man believe his eyes? [A] Because he didn't know the price. [B] Because he didn't see the price tag. [C] ...
【单选题】More than a quarter of the energy in the United States goes to moving people and goods from one place to another.
A.
using
B.
used
C.
to use
D.
use
【简答题】Most people in America live in small family groups. More than a quarter of homes in America have only got one person in them. Some of these are old people but some are people of twenty or thirty years...
【单选题】If you are more than a quarter of an hour late, you could lose your reservation for the computer.
A.
真
B.
假
C.
NOT GIVEN
【单选题】More than a quarter of American children--and half of black children--belong to families too poor to fully qualify for the ＄1,000-a-year child tax credit, which President Bush signed four years ago an...
A.
Conservatives and liberals have basically come to an agreement on child tax credit.
B.
Bush's program of sweeping tax cuts helps low-income families in a real sense.
C.
Many conservatives argue child tax credit should be used for qualified families.
D.
Many liberals intend child tax credit for the poorer workers instead of children.
【简答题】Most people in Britain live in small family groups. More than a quarter of houses in Britain have only got one person in them. Some of these are old people but some are people of twenty to thirty who...
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