【简答题】简述,此零件利用面、线、点的3-2-1法建立坐标系的步骤!
【单选题】听力原文:Jack, you're talking big about how great your team is and how bad they'll beat my team on Saturday. Let's bet fifty dollars on who win. Let's see you put your money where your mouth is. What does...
A.
He's boasting of his own team.
B.
He's speaking ill of the speaker's team.
C.
He likes to bet money for his team.
D.
He enjoys betting with the speaker.
【单选题】听力原文:Jack, you're talking big about how great your team is and how bad they'll beat my team Saturday. Let's bet fifty dollars on who wins. Let's see you put your money where your mouth is. What does t...
A.
He's boasting of his own team.
B.
He's speaking iii of the speaker's team.
C.
He likes to bet money for his team.
D.
He enjoys betting with the speaker.
【单选题】下列有关数据归档存放的说法中,正确的是()。
A.
在工作前放置在存储环境下的光盘必须在工作环境至少1个小时
C.
归档后的数据档案介质不得外借,只能提供数据复制介质
D.
数据档案进行转存新格式拷贝后,原数据档案应于当年集中销毁
【单选题】计算机的中央处理器只能直接调用( )中的信息。
【单选题】Jack' s mother was very angry because .
A.
Jack didn't want to ring her up
B.
Jack had a telephone but she hadn't
C.
she didn't know how to make a telephone
D.
she didn't know she couldn't be called
【单选题】计算机的中央处理器只能直接调用( )中的信息。
【单选题】为表示关系 100≥b≥0 ,应使用 C 语言表达式