【单选题】What do we usually think of our normal behavior?
A.
It is controlled by powerful thoughts.
B.
It is beyond the study of psychology.
C.
It doesn't need to be explained.
D.
It doesn't seem to be natural sometimes.
【判断题】当n≥2时,所有n阶全排列中,奇排列与偶排列的个数相同!
【多选题】What do we usually do in writing a concluion of a short essay?
A.
Use all of the techniques
B.
Choose to use one of the techniques
C.
Choose to use two of the techniques
D.
Choosing techniques should be based on your needs
【单选题】牛,过度使用,突然出现呼吸困难,皮下气肿,伸舌,惊恐不安,该病可能是( )
【判断题】一般而言,同类型的门电路带下一级电路门的个数是不受限的。
【多选题】what do we usually do in the discussion section of a research paper?
A.
Compare our results with previous studies
B.
Restate major findings
D.
Present the results objectively
【判断题】当视图中的物体被捕捉后,就不能再移动了。
【多选题】What do we usually talk about to start a conversation?
A.
Commenting on impersonal topics, such as the weather.
B.
Commenting on the activity we are participating in, such as the party.
C.
Interrupting at the right point into the conversation we are having.
D.
Asking about marital status
【单选题】n阶行列式的定义()
A.
n阶行列式表示所有可能取自不同行不同列的n个元素乘积的代数和,各项的符号是:当这一项中元素的行按自然顺序排列后,如果对应的列标构成的排列是偶排列则取正号,是奇排列则取负号。
B.
n阶行列式表示所有可能取自不同行不同列的n个元素乘积的代数和,各项的符号是:当这一项中元素的行按自然顺序排列后,如果对应的列标构成的排列是偶排列则取负号,是奇排列则取正号。
C.
n阶行列式表示n行n列的n个元素乘积的代数和,各项的符号是:当这一项中元素的行按自然顺序排列后,如果对应的列标构成的排列是偶排列则取正号,是奇排列则取负号。
D.
n阶行列式表示n行n列的n个元素乘积的代数和,各项的符号是:当这一项中元素的行按自然顺序排列后,如果对应的列标构成的排列是偶排列则取负号,是奇排列则取正号。
【判断题】一般而言,同类型的门电路带下一级电路门的个数是不受限,对吗?