单选题:UncleSamoftenwearstallhat,________andthestarsandstripesofthe 题目分类:英语 题目类型:单选题 查看权限:VIP 题目内容: UncleSamoftenwearstallhat,________andthestarsandstripesoftheAmericanflag.A.darkhairB.abowtieC.aboxD.ashirt 参考答案: 答案解析:
Whenyoudosomethingnewexciting,youhave________.A.asymbolB.ana Whenyoudosomethingnewexciting,youhave________.A.asymbolB.anadventureC.ajobD.atri 分类:英语 题型:单选题 查看答案
__________A.didn‘tmeetB.haven’tmetC.didn‘tknowD.haven’tknown __________A.didn‘tmeetB.haven’tmetC.didn‘tknowD.haven’tknown 分类:英语 题型:单选题 查看答案
__________A.drivertotheengineB.driverengineC.engineer‘sdrive __________A.drivertotheengineB.driverengineC.engineer‘sdriverD.enginedriver 分类:英语 题型:单选题 查看答案
今拟用电阻丝制作一三相电炉,功率为20kW,电源线电压为380V。若三相电阻接成对称星形,则每相电阻等于: 今拟用电阻丝制作一三相电炉,功率为20kW,电源线电压为380V。若三相电阻接成对称星形,则每相电阻等于:A.12.5Ω B.7.22Ω C.17.52Ω 分类:英语 题型:单选题 查看答案