喷涂时，喷枪喷幅跳动及不连续不可能原因是？
A. 枪壶中涂料不足
B. 气源气压不足
C. 枪壶透气孔堵塞
D. 枪嘴或枪针过松
Where do Heathcliff and Catherine play like savages when they are young?
A. By the river
B. In the barn
C. In the cave
D. On the moors
Catherine becomes ill, giving birth to a son, and dies. Heathcliff begs her spirit to remain on Earth — just as long as she does not leave him alone.
A. 对
B. 错
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