【单选题】心肌缺氧时引起冠状动脉舒张,主要通过下列哪一因素引起的
【简答题】改错题: 植物的生长,需要吸收土壤里的水分、氮、磷、钾等肥料。 这个句子的错误在于( )词项并列不当。 改正: 植物的生长,需要吸收土壤里的( )等肥料。
【简答题】道床横向阻力的提高,肩部()比肩部加宽效果更明显。
【简答题】电流通过导体产生的热量,跟()的平方、导体的()和通电的()成正比。这就是著名的焦耳定律。
【简答题】电流通过导体所产生的热量,跟电流的二次方、导体的电阻和通电的时间的乘积成正比,这就是————
【单选题】听力原文:W: I was [19] working on a paper about the differences between women and men. I have been thinking about it all these days, but no satisfactory results come out. M: Ah, you may not realize you're...
A.
Looking for a person to talk to.
B.
Working on a troublemaking talking.
C.
Trying to understand the two genders.
D.
Trying to understand friendship between women.
【单选题】以下关于脊髓灰质炎的传播途径,正确的是:()
【单选题】在将增产任务分配给车间时,应以( )为标准选择车间。