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【判断题】
视诊时最好采用自然光，为了便于对震动及轮廓的观察应选择侧面光线进行。()A.
正确
B.
错误
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皮皮学刷刷变学霸
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【简答题】在气体放电管中，高速电子撞击原子发光。如高速电子的能量为12.2eV，轰击处于基态的氢原子，试求氢原子被激发后所能发射的光谱线波长。
【单选题】交通标志成为现代生活一部分,在保证道路交通安全、顺畅方面有着重要作用,分为主标志和辅助标志两大类,主标志包括禁令标志、警告标志、指路标志、指示标志等。下列选项中标志禁止驶入标志的是()
A.
B.
C.
D.
D
【简答题】Mary went to the cinema with her brother, ____________ (对此我很吃惊).
【单选题】氢原子基态能量为E1=-13.6eV.用能量为12.9eV的电子束轰击一群处于基态的氢原子，氢原子能够被激发到的最高能级为( )
A.
n=1 能级
B.
n=2 能级
C.
n=3 能级
D.
n=4 能级
【单选题】Mary _________ to the zoo yesterday, but her sister _________. [ ]
A.
went; doesn't
B.
went; didn't
C.
goes; doesn't
D.
goes; didn't
【简答题】A．Mary has a keen eye for style. B．Nancy regrets buying the dress. C．Nancy and Mary went shopping together in Rome. D．Nancy and Mary like to follow the latest fashion.
【单选题】Jim went swimming with his parents yesterday afternoon. _______. [ ]
A.
So did Mary
B.
So Mary does
C.
So Mary was
D.
So Mary did
【单选题】–The love story between Mary and Peter went public.. --Well, that is why Mary’s parents were so awkward ___ the news. She is still a child..
A.
at
B.
with
C.
for
D.
against
【简答题】完形填空。 Mary and 1 grandmother went shopping this morning. They went to the shopping centre 2 bus. First, they 3 some food in the supermarket. Then they went to the 4 floor to buy a T-shirt. After that,...
【简答题】交通标志已经成为现代生活的一部分。在保证道路交通安全、顺畅方面有着重要作用。分为主标志和辅助标志两大类。主标志包括禁令标志、警告标志、指路标志、指示标志等。下列选项中，表示“禁止直行”的标志是( )
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