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【判断题】
金属的预先变形程度愈大, 其再结晶温度愈低。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】I had no idea she was there. I met her only____. [ ]
A.
as a result
B.
in surprise
C.
by chance
D.
in a way
【单选题】—I think Mr Zhang may be in his office. —No, he be there. I saw him just now.
A.
needn’t; left
B.
mustn’t; leaving
C.
can’t; leave
D.
shouldn’t; leave
【单选题】Next time I go there. I______ them about what has happened recently.
A.
ask
B.
shall ask
C.
asked
D.
asks
【简答题】阅读理解。 Last Sunday, I went to the park with my parents. There were many people there. I saw some boys and girls. They sang. Some English songs. Who was the boy in green? He was David. He played footbal...
【单选题】关于气相色谱柱温的说法正确的是( )。
A.
柱温直接影响分离效能和分析速度。
B.
柱温与固定液的最高使用温度无关。
C.
采用较高柱温有利于提高分离度。
D.
柱温应高于混合物的平均沸点。
【单选题】关于气相色谱柱温的说法正确的是()
A.
柱温直接影响分离效能和分析速度
B.
柱温与固定液的最高使用温度无关
C.
采用较高柱温可增大分配系数
D.
柱温应高于混合物的平均沸点
【单选题】— I think Mr. Zhang may be in his office. — No, he _____ be there. I saw him ____ there just now.
A.
can’t; went
B.
mustn’t; left
C.
can’t ; leave
D.
may not; going
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