Which of the following statements is NOT true（）
A. Getting off to work with a minimum effort helps save one's energy.
B. Dr. Kleitman explains why people reach their peaks at different hours of day.
C. Habit helps one adapt to his own energy cycle.
D. Children have energy cycles, too.
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防酸隔爆型铅蓄电池安装间距应按制造厂的说明书规定，一般为( )。正负极用连接条、连接螺栓串联时，应在连接的螺栓上涂以中性凡士林油；螺栓连接应紧固。
A. 10mm
B. 15mm
C. 25mm
D. 35mm
In the Middle Ages, students （）
A. took objective tests
B. specialized in one subject
C. sat in a room full of candidates
D. never wrote in exams
固定型开口式铅蓄电池内裸硬母线支持点的间距不应( )。
A. 大于1m
B. 小于1m
C. 大于2m
D. 小于2m
发电机组至低压配电柜馈电线路的相间、相对地间的绝缘电阻值应( )；塑料绝缘电缆馈电线路直流耐压试验为2.4kV，时间15min，泄漏电流稳定，无击穿现象。
A. 大于0.5MΩ
B. 小于0.5MΩ
C. 大于1.5MΩ
D. 小于1.5MΩ
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