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【简答题】
是根据衍射花样,在分光晶体结构已知的情况下,测定各种物质发出的 X射线的波长和强度,从而研究物质的原子结构和成分。 ( 填 x射线学的分支 )
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举一反三
【单选题】The sun was so bright that it even shone through the haze over the town, and ______ steadily.
A.
could be looked for
B.
could look through
C.
could be looked on
D.
could be looked at
【单选题】The sun was so bright that it even shone through the haze over the town, and ______ steadily.
A.
could be looked for
B.
could be looked through
C.
could be looked on
D.
could be looked at
【单选题】点击超链接后要在新窗口打开网页,可以设置a标签中的target属性来实现,下面哪一项设置能够实现该功能( )?
A.
target="_self"
B.
target="_blank"
C.
target="_parent"
D.
target="_top"
【简答题】内墙面、墙裙的抹灰长度以()与()间的图示净长计算。
【单选题】The buildings in this modern city are growing tall, some even reaching over 400 meters _______ height.
A.
at
B.
for
C.
in
D.
on
【单选题】Even in the overcrowded United Kingdom there are large __
A.
tracks through the open country
B.
areas of country without soil
C.
areas of countryside not developed
D.
expanses of land where nobody works
【单选题】The concept of television,______images over distances, had intrigued scientists even before the invention of moving pictures or radio.
A.
the transmission of
B.
transmitted by
C.
transmission into
D.
the transmitting for
【单选题】下列哪一个标签的属性是在一个新的页面窗口打开链接?
A.
target="_self"
B.
target="_top"
C.
target="_blank"
D.
target="_parent"
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