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【单选题】
采用2,6-二氯酚靛酚法测定植物组织中Vc的含量时,滴定终定是什么颜色?A.
淡红色
B.
无色
C.
蓝色
D.
紫色
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反馈参考答案：
举一反三
【单选题】听力原文： The WHO has confirmed that at least three people have died of bird flu in Vietnam, the same virus that first emerged in Hong Kong in 1997 and killed six people. Hundreds of thousands of chickens...
A.
At least three.
B.
Six.
C.
Thirteen.
D.
Fifteen.
【简答题】构件与零件不同，构件是（）单元，零件是制造单元。
【简答题】构件是 单元;零件是 单元。
【简答题】构件是 单元,零件是 单元。
【单选题】听力原文： Vietnam's prime minister has announced his plans to visit the United States next month. He'll be the first Vietnamese leader to travel to the US since the end of the Vietnam War. Prime Minister ...
A.
In June.
B.
Last month.
C.
Next month.
D.
On his official trip to Australia.
【简答题】A．Television has been very effective in spreading news. B．Vietnam War was the first live broadcast of TV. C．Television can even change the way a government acts. D．Television did more to end the Vietn...
【简答题】构件和零件不同,构件是 单元,而零件是 单元。
【单选题】Where has the highest rates of newborn deaths in the world?
A.
South Asia.
B.
Vietnam.
C.
Africa.
D.
South America.
【简答题】零件是 单元,构件是 单元。
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