【单选题】Part I Multiple Choice Questions (1’ x10) Indicate the best answer for each question by circling the correct letter. 1. When using visual aids in a speech, you should __________.
A.
draw graphs and charts on the chalkboard
B.
display visual aids only while discussing them
C.
pass visual aids among the audience at the start of the speech
D.
not worry about maintaining eye contact with the audience
【单选题】服用硫酸亚铁治疗缺铁性贫血时,患者不宜大 量食用脂肪性食物是( )
【判断题】In the United States and in many parts of Europe, direct eye contact is considered as a means to express interest, to indicate trust in the other person and to convey openness.
【单选题】在零件模块中,要得到一个与当前模型不存在几何从属关系的镜像模型,应选择( )
【判断题】我国1998 年——2002 年实施的积极财政政策的主要手段是减税。( )
【单选题】物体放在凸透镜前适当位置能在屏上得到一个清晰的像,如果把屏拿开,则( )
【单选题】When people communicate face to face, they convey information in several ways apart from by the words they use. Thus, how often they make eye contact and how long they sustain that contact can indicat...
【简答题】当前有一个 centos7.2-1511.iso 的镜像文件,使用这个文件配置 yum 源,要求将这个镜像文件挂载在/opt/centos 目录。还存在一个 ftp 源, IP 地址为192.168.100.200,ftp 共享的目录为/opt,/opt 目录中存在一个 iaas 目录(该目录下存在一个 repodata 目录)请问如何配置自己的 local.repo 文件,使得可以使用这两个地方...