按（）和叙述风格特性来分类，影片可以分为戏剧式电影、散文式电影、诗电影、心理片等。
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保证期间，债权人许可债务人转让部分债务未经保证人书面同意的，保证责任应当如何承担？
如果VHFNAV控制面板显示的频率是108.1MHZ，此时按下该面板的测试电门，以下说法正确的是（）
A. 对VOR进行测试
B. 对DME进行测试
C. 对ILS进行测试
D. 以上都不对
Large volumes of carbon dioxide are safe and effective for fighting fires in enclosed spaces，such as in a pumproom，provided that the（）.
A. persons in the space wear gas masks
B. persons in the space wear damp cloths over their mouths and nostrils
C. ventilation system is secured and all persons leave the space
D. ventilation system is kept operating
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