下列不属于责任保险适用范围的是()。
A.各种提供技术服务的单位
B.各种运输工具
C.各种产品的生产者、销售者、维修者
D.各种需要雇佣员工的法人或个人
参考答案:B
______是为计算机网络中进行数据交换而建立的规则、标准或约定的集合。
When he was told the ________ result of the research, there was a ________ expression appearing
on his face.[ ]
A. puzzle; puzzling
B. puzzling; puzzling
C. puzzled; puzzled
D. puzzling; puzzled