电力负荷预测按照预测时间长度的不同可分为（）。
A.超短期负荷预测
B.短期负荷预测
C.中期负荷预测
D.长期负荷预测
参考答案：A, B, C, D
小题1:He noticed someone following him, and glanced round. He _______ _______ _______ a dark figure in the shadows.
小题2:The best love for someone is heartful care _______ _______ money
小题3:I was _______ _______ eating heavy food then by my doctor, because of my stomach trouble.
小题4:I could see the faint gleam of light _______ _______ _______.
枪支不经常使用时，（）至少擦一次。
A、每周
B、每半月
C、每个月
D、每半年
