【单选题】设随机变量X满足D(10X)=10,则DX=
【单选题】美国心理学家佛兰克·法利提出( )性格,认为这是一种好冒险、喜欢刺激的性格特征。
【单选题】对于物联网设备采购和验收过程中的要求,下面哪一项描述 不正确
【简答题】The child enjoyed _____ up the wooden bricks then knocking them down. A. adding B. pushing C. piling D. forming
【单选题】美国心理学家佛兰克·法利提出()性格,认为这是一种好冒险、喜欢刺激的性格特征。
【单选题】The box of bricks hit the man because ______.
A.
the box of bricks was heavier than him
B.
the box of bricks was lighter than him
C.
the box of bricks came down too fast
D.
the man was too careless
【判断题】Golden bricks are made of gold.
【单选题】________ at the golden belt of Yangtze River Delta, Ma'anshan is the National Garden city _______ wonderful landscape appeals to many visitors every year.