【单选题】用万用表的通断档(二极管档)测量热继电器的热元件两端,万用表的蜂鸣器()。
【多选题】新石器时代的石雕作品可大致划分为四类,为_____和具有生活气息的动物石雕、琢制的石磐。
【判断题】零件的应力随时间变化时,均应按变应力作强度计算。
【单选题】Directions: Now you will hear a news report 1 . At the end of the report, you will hear some questions. After you hear a question, choose the best answer from the four choices.
A.
They know different kinds of languages.
B.
They like to whistle to each other for hours.
C.
They use whistling to communicate with others.
D.
They learn a whistling language from their cattle and sheep.
【判断题】零件的应力随时间变化时,均应按变应力作强度计算。
【单选题】网络道德()的道德包括网络使用者的道德、网络服务者的道德、网络管理者的道德和网络建造者的道德。
【判断题】零件的应力随时间变化时,均应按变应力作强度计算。
【单选题】Directions: Now you will hear a news report 1 . At the end of the report, you will hear some questions. After you hear a question, choose the best answer from the four choices.
A.
Preserving the island and mountains.
B.
Teaching the whistling language in schools.
C.
Asking people to move to the mainland of Spain.
D.
Encouraging people to use modern ways of communication.
【判断题】零件的应力随时间变化时,均按应变力作强度计算。