圆跳动公差分为四种，划分的依据是被测要素的几何特征和检测方向。
参考答案：对
"We must keep a secret of the things _______ here", the general said, _______ at the man in charge of the information office.
A．discussed, stared seriously
B．being discussed, seriously staring
C．to be discussed, seriously stared
D．discussed, stared
下列属于商业银行流动性风险的原则是（）。
A.保障性
B.流动性
C.安全性
D.盈利性
E.竞争性
