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【单选题】
在我国引起咯血的最常见病因是:A.
支气管扩张
B.
肺结核
C.
肺癌
D.
肺脓肿
E.
慢性支气管炎
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反馈参考答案：
举一反三
【简答题】Some parents do not ____their children to choose a challenging job instead of a stable one. (courage)
【简答题】绘制平行于轴线的视图,外螺纹倒角内部需要 绘制牙底线,内螺纹倒角内部 ___需要 绘制牙底线。
【单选题】内、外螺纹旋合，旋合部分按 的画法绘制。在平行轴线的视图上，旋合部分的画法：大径绘制粗实线，小径绘制细实线。垂直于轴线的视图上，旋合部分的画法：大径绘制粗实线圆，小径绘制3/4圈细实线圆，且倒角圆不画。
A.
外螺纹
B.
内螺纹
C.
看不见的轮廓线
D.
轴
【简答题】Some parents do not believe their children should ( ) to learn a language other than the one they speak at home.
【简答题】It is stated in the passage that ________. A) some parents are not prepared to have a child B) young couples do not like children at all C) working couples do not have much time to take care of their ...
【单选题】It is stated in the passage that ______.
A.
some parents are not prepared to have a child
B.
young couples do not like children at all
C.
working couples do not have much time to take care of their children
D.
many parents look forward to having a boy as their first child
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