【判断题】【消耗次数：1】
请判断：当直线相关系数为零时，说明变量之间呈线性关系。( )
①
正确
②
错误
参考答案：
复制
纠错
相关题目
随机题目
【单选题】
He looked around and caught a man________his hand into the pocket of a passenger.
①
put
②
to be putting
③
to put
④
putting
【单选题】
In January,2004,the United States successfully launched Spirit,a Mars Exploration Rover(火星控测飞行器),________a new milestone(里程碑) in the history of mankind.
①
it marked
②
marking
③
marked
④
to mark
【单选题】
-Johnson has promised us that he will help ?us out to his best ability.
-I don’t buy it. In my opinion, ?he _______ so kind.
①
has been
②
is
③
was
④
is being
【单选题】
Mrs.Blackhasgot_______insteadofgettingany better.
①
morebad
②
alittleworse
③
muchbadly
④
alotofworse
【单选题】
I________go to bed until I________finished my work last night.
①
dont;had
②
didnt;have
③
didnt;had
④
dont;have
【单选题】
No sooner________he arrived home than he________to start on another journey.
①
has;was asked
②
have;were asked
③
had;is asked
④
had;was asked
【单选题】
He was prepared to make the ultimate sacrifice, displaying ?bravery that was second to _________.
①
none
②
neither
③
anything
④
nothing
【单选题】
Did you get a dictionary?No. I________,but there were not any________.
①
tried;to be left;
②
had tried to;leaving
③
tried to;left
④
had tried;have left