证券营业部同投资者之间的资金清算有()操作方式。
A.证券营业部自办出纳
B.银行代理出纳
C.银行代理资金清算
D.投资者自行管理
参考答案:A, B, C
第二节:开放作文(15分)
请根据下面提示,写一篇短文。词数不少于50。
In your spoken English class, your teahcer shows you the following picture. You are asked to describe the picture and explain how you understand it.
计算题:某井进行压裂,压裂层位深3000米,破裂压力为60MPa,计算破裂梯度是多少?