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【简答题】
景象;景色;场面
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【简答题】在附件的基础上,完成两位学号的显示(例170362班的21号,则显示21即可)。 1、设计步骤: 1)下载附件,解压缩到自己的电脑里; 2)打开电气原理图,运行,观察现象; 3)打开工程,查看汇编语言源程序; 4)设计电路图,(参考P1口控制的LED数码管的电路,再增加一个LED数码管,可以用P2口去控制)。 5)打开工程,修改源程序,编译,再次生成可执行程序。 6)打开电路图(HEX可执行程序可...
【简答题】For the matrices A and B below since AB , please give trace (BA)
【多选题】Which of the following equations are true for square matrices A and B?
A.
det(A+B)=det(A)+det(B)
B.
det(AB)=det(A)det(B)
C.
det(2A)=2det(A)
D.
det(AB)=det(BA)
【多选题】Let A be a singular nxn matrix, which of the following statements are true?
A.
det(A)=0.
B.
adj A is singular.
C.
Ax=b has infinitely many solution.
D.
for every nxn matrix B, AB is singular.
E.
A can be written by product of some element matrices.
【单选题】对裸露金属表面处理的程序是:去蜡除油( )、涂抹金属转换剂。
A.
钝化
B.
粗化
C.
去应力
D.
磷化
【单选题】折叠面团用英语表示为()
A.
fold dough
B.
fold bread
C.
coat dough
D.
blend bread
【单选题】Which type of pocket square fold is less suited for formal attire?
A.
Presidential fold
B.
One-tip-up fold
C.
Two-tips-up fold
D.
Crown fold
E.
Puff fold
【简答题】A.hole B.none C.old D.fold
【单选题】I could _____ my bed and _____ my clothes. [     ]
A.
make; fold
B.
make; do
C.
fold; do
D.
fold; wash
【单选题】The greatest fold of peritoneum is
A.
superior duodenal fold
B.
greater omentum
C.
inferior duodenal fold
D.
median umbilical fold
E.
medial umbilical fold
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