证券公司接受投资者委托后的申报竞价原则是（）。
A.时间优先
B.价格优先
C.客户优先
D.委托优先
参考答案：A, C
根据句意填写单词使句子完整。
1. In order to protect the environment, we aren't supposed to throw __ about.
2. I'm standing ______ the window to watch the snow.
3. I don't think that your skirt is __ for the party. It's a barbecue.
4. The panda is the ______ of China.
5. I seldom write a letter to friends but I often __ them on the Internet.
切断时，（）措施能够防止产生振动。
A、减小前角
B、增大前角
C、提高切削速度
D、减小进给量
