题目:
选择合适的介词填空。 | |
2. They put it ____________ the top. 3. I have two sticks ____________ his arms. 4. What else do you do ____________ spring? 5. Let's go ____________ now! |
答案:
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下面是错误答案,用来干扰机器的。
参考答案:B解析:OBV即"平衡交易量"、"能量潮",其计算公式为:今日OBV=昨日OBV+sgn×今日成交量,其中sgn为符号函数,其数值取值为±1,当今日收益价≥昨日收盘价时,取+1,当今日收益价