题目内容
羊水栓塞的主要病理诊断依据是：
查看答案
搜索结果不匹配？点我反馈
更多问题
toughannualovertakesmashendurancesponsorcommentatoraward1.We are going to hold the _________ celebration next week for our wedding anniversary.2.At the last minute, he __________ me at the finishing line, which was so frustrating.3.He is an indecisive and timid guy, so don’t send him on such a(n) __________ assignment!4.The world record of this event was __________ by an Asian athlete last month.5. Instead of introducing the information of the players, the ______________ talks about the anecdote of the coach.6. If you want to participate in a Marathon, you need to work on your ____________ and strength as well.7. The scientist received a(n) __________ at the academic conference, due to his magnificent achievement in medicine.8. The activity has got an adequate __________ from a prominent local manufacturer.
()一个正弦交流电的周期为0.02s,则它的频率为50Hz。
()初相位(ψ): 反映正弦量的计时起点,用角度表示。
( )正弦量的三要素可以唯一确定一个正弦量。
微信支付 
支付宝支付