【单选题】下列选项中表述正确的一项是( )
B.
自由锻适合于单件、小批量和大型、重型锻件的生产
C.
金属沿纤维方向较垂直于纤维方向具有较高的强度、塑性和冲击韧性能
【多选题】按照海关有关规定,下列关务操作中若涉及许可证管理,必须提交相关许可证件的是( )。
【单选题】The fireman succeeded in saving all the people in the house on fire, _______they knew they were in great danger themselves.
【简答题】--They all agreed _________ George. Has the project been passed? --Who _________ George can make the final decision?
【单选题】下列间歇时间中,属于组织间歇时间的是( )
【简答题】Sports, drama, and all kinds of organizations keep students busy during high school. Where do they get the money to do these things? Not everyone gets it from parents. Most have to work for at least s...