【判断题】作用于一个杆件上的两个外力等值、反向、共线,则杆件受轴向拉伸或压缩。
【单选题】Windows系统经常提示磁盘空间不足,用杀毒软件也没发现病毒,想要获得更多的剩余空间,可使用()。
A.
“附件”→“系统工具”→“磁盘碎片整理程序”
【单选题】如图所示,多匝电感线圈的电阻和电池内阻都忽略不计,两个电阻的阻值都是R,电键S原来打开,电流为I0,今合上电键将一电阻短路,于是线圈有自感电动势产生,这电动势
D.
有阻碍电流增大的作用,但电流最后还是增大到2 I0
【单选题】Last Christmas I worked at the jewelry counter of a local department store. Although it is supposed to be a season of goodwill, Christmas made ordinarily pleasant people pushy and demanding. Once, an ...
D.
Class reading or lecture
【单选题】患者,男,32岁。2年前因胃溃疡行"胃大部切除术",近半年经常出现头晕、心悸、体力逐渐下降,诊断为"缺铁性贫血",其贫血的原因最可能是
【单选题】I insisted that we ______ overnight at the hotel, and finally all the group members agreed.
【单选题】I ___ telegraphed back that it was all right with me if he insisted.