【单选题】进出口货物( )未向海关申报的,海关可以依法变卖处理。
【单选题】The boy is good at playing _____ guitar and _____ table tennis.
【单选题】如下格式的声音文件中,( )的音质较好。
【单选题】The bright boy is good at maths.
【单选题】The boy is good at English. He often helps me __________ Chinese ___________English.
【单选题】如下格式的声音文件中,( )的音质较好。
【简答题】某教学楼的内廊为简支在砖墙上的现浇混凝土板,计算跨度为L=2.66m,永久荷载标准值为q=3.405KN/m,可变荷载标准值为q=2.5KN/m,构件的安全等级为二级,试计算该楼板的弯矩设计值。
【单选题】The boy is good at _________ football.
【单选题】The little boy is good at drawing .