【单选题】在三相异步电动机的连续运转控制中,其控制关键是
【单选题】Which of the following would be the best TITLE for the passage?
A.
Different Forms of Exercise.
B.
Exercise--The Road to Health.
C.
Scientific Evidence of Health Benefits.
D.
Running--A Popular Form. of Sport.
【单选题】当发现负责值班的高级船员因疲劳的影响难以保证安全值班时,长应:
C.
调整值班的安排,使之得到适当的休息,以利于下一个班次能够胜任职责的要求
【单选题】There is a in my school and there are many in it.
【判断题】一旦外在的强制力不存在,内在的意志力缩水,就很难坚持。所以,热爱和兴趣才是主动学习最好的、真正的、持久的动力来源。
【单选题】当发现负责值班的高级船员因疲劳的影响难以保证安全值班时,船长应:
C.
调整值班的安排,使之得到适当的休息,以利于下一个班次能够胜任职责的要求
【单选题】For the diagnosis of breast cancer, the thing put to top priority is______.
A.
having exercise at once
B.
going to see the doctor
C.
having a good working team
【单选题】There a photo of my family in my purse.