【多选题】护士为患者进行破伤风抗毒素皮试时,下列操作正确的是
【单选题】在4阶行列式 中,第二行的元素依次为 ,它们的余子式依次为 ,则 .
【单选题】某车辆采用双级主减速器,第一级主、从动齿轮齿数分别为13和25.第二级主、从动齿数分别为15和45.那么主减速器的传动比是:
【判断题】电话闭塞准备时,若列车停在道岔上,如果开行到前方车站待命,在确认道岔方向正确具备可行车条件时,需要以15公里/小时的速度缓慢通过道岔。
【判断题】用2%碘酊给皮肤消毒,碘酊在皮肤作用的时间为5分钟,然后再用70%酒精脱碘。
【判断题】When asked about your weaknesses you actually need to speak mainly about what you’ve done to improve it. And by doing so, you would be regarded as a person with initiative.()
【单选题】______ the story how he lost his hearing.
B.
Edison himself liked to tell
D.
Edison himself disbelieved
【单选题】When you speak during an interview, you could____.
A.
make up something as you want
B.
speak with warm and natural voice
C.
put one of your legs on top of the other
D.
move your body back and forth
【单选题】某车辆采用双级主减速器,第一级主从动齿轮齿数分别为13和25,第二级主从动齿轮齿数分别为15和45,那么此主减速器的传动比是:
【单选题】下列关于总账处理模块的表述中,正确的是()。