压力容器的筒体厚板常设计成（）。
A、对称的X形坡口
B、不对称的X形坡口，即内浅外深
C、不对称的X形坡口，即内深外浅
D、单面V形坡口
参考答案：B
全国银行间债券市场回购交易数额最小为债券面额（）元，交易单位为债券面额1万元。
A.1万
B.5万
C.10万
D.20万
Which of the following descriptions of the Enlightenment Movement is NOT correct
A. The movement flourished in France.B. The movement was a furtherance of the Renaissance.C. The purpose of the movement was to enlighten the whole world.D. The purpose of the movement was to enhance the religious education.
