涡旋压缩机主要由两个涡旋盘相错()对置而成,其中一个是固定涡旋盘,而另一个是旋转涡旋盘。 ["90°","120°","180°","45°"]
机体保钠的主要激素是() ["血管升压素","肾上腺素","氢化可的松","雌激素","醛固酮"]
川崎病并发冠状动脉瘤时,常于病程何时出现() ["起病1~3天内","起病1~7天内","起病1~6周内","起病2~4个月内","起病6个月以后"]
某一站场工业网主链路中断后,会引发的现象是() ["A.scada画面中显示站场plc通信状态的图标闪烁","B.无法ping通此站网关","C.无法控制此站场电动阀门","D.以上现象都不会发生"]
血浆ACTH升高可见于如下病症,哪项除外() ["库欣综合征","异位ACTH分泌综合征","双侧肾上腺全切或次全切除后纳尔逊综合征","原发性艾迪生病","垂体性皮质醇增多症"]
空车P63脱轨,用起重机在单线上怎样起复?