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【判断题】
在进行蒸馏操作时，液体样品的体积通常为蒸馏烧瓶体积的1/2~3/4。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】The Bermuda Triangle There is a place in the Atlantic Ocean where ships and airplanes seem to disappear more often than anywhere else on Earth. It seems to form. a triangle between Miami, Bermuda, and...
A.
Y
B.
N
C.
NG
【简答题】听下面一段材料, 回答第1至4题. 1. Where did the British ships land in 1607? A. The Atlantic Ocean. B. The Mississippi. C. Virginia. 2. How did people find names for areas of the new land? A. They invented their ow...
【简答题】6 Which words are being defined? ► a small stone you find on a beach pebble 1 the line between the land or the sea and
the sky ____ 2 a large piece of stone ____ 3 an area of sand or...
【单选题】The Bermuda Triangle There is a place in the Atlantic Ocean where ships and airplanes seem to disappear more often than anywhere else on Earth. It seems to form. a triangle between Miami, Bermuda, and...
A.
Y
B.
N
C.
NG
【单选题】a place where ships are loaded and un loaded or repaired
A.
cargo
B.
transit
C.
aground
D.
dock
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