【判断题】中和l0g油脂所需氢氧化钾的质量(mg)称为酸值。( )
【单选题】Which of the following statements about Greek mythology is true?
A.
Greek mythology is of little importance to modern civilization.
B.
Olympian gods and goddesses never made mistakes because they were all-knowing and morally perfect.
C.
The ancient Greeks used the myths to explain the world of their afterlife.
D.
Human heroes and monsters were important figures in Greek mythology.
【单选题】Which of the following statements about Greek mythology is true?
A.
Greeks believed only in one god.
B.
Greek gods and goddesses were flawless and didn't have any mental weaknesses.
C.
Greek mythology also tells the legend of heroes.
【单选题】若函数 y = f ( x )是定义在 R 上的减函数 , 则( )
A.
. f ( - 3 ) > f ( - 1 )
B.
. f ( - 3 ) < f ( - 1 )
C.
. f ( - 3 ) = f ( - 1 )
D.
. f (- 3 )与 f (- 1 )的大小无法确定
【单选题】在直流电桥中,哪种电路的电压灵敏度最小? ( )
【简答题】已知c>0,p:函数y=c x 是R上的减函数;q:当 x∈[ 1 2 ,2] 时,函数 f(x)=x+ 1 x > c 2 - 5 2 c+3 恒成立.若p∧q为假命题且p∨q是真命题,求c的取值范围.