【单选题】何谓船体混合骨架式结构
A.
船舶中段船底、甲板结构采用纵骨架式;舷侧结构、首尾端采用横骨架式
B.
船舶中段船底、甲板结构采用横骨架式;舷侧结构、首尾端采用纵骨架式
【单选题】微博用户通过 WEB 、 WAP 等各种客户端服务组建个体传播社区和传播网络,以( )个(包括标点符号)文字、图片和视频片段等内容信息,实现即时发布和共享。
【单选题】 There are several________teachers in our college.
【单选题】 There are several possible explanations for why retail prices often end on certain numbers.
A.
Definition and example
B.
Comparison and/or contrast
【单选题】 There are several buildings, and there are other power cables around them. If these buildings need to be connected to form a backbone campus network, it is more appropriate to use ().
C.
Unshielded twisted pair
【判断题】.在理论空燃比14.7:1附近很窄的范围内,三元催化转化器的转换效率比较高。( )