CRH3C型高度调整阀及连杆的一级修标准是（）
A.高度调整阀安装牢固
B.调整杆无变形
C.配件无缺失
D.连杆无损伤
参考答案：A, B, C
简述我国商业银行的特点。
The news of the mayor’s coming to our school for a visit was _______ on the radio yesterday.
A．turned out
B．found out
C．given out
D．carried out
