He wrote this
book_____ 1960.
A: at
B: in
C: X
D: out
E: in
F: on
G: on 1.
Mary
told the news to everybody __A___the classroom.
H: at
book_____ 1960.
A: at
B: in
C: X
D: out
E: in
F: on
G: on 1.
Mary
told the news to everybody __A___the classroom.
H: at
举一反三
- He wrote this book_____ 1960. A: at B: X C: in D: on
- 设 f, g, h∈ R→R ,且有[br][/br] f(x)＝x＋3, g(x)＝2x＋1, h(x)＝x/2.[br][/br]则： f ◦ g=， g ◦ f=，f ◦ h=，f ◦ f=。
- 3. 下列各对函数$y=f(u), u=g(x)$中, 可以复合成复合函数$y=f(g(x))$的是( ). A: $f(u) = \sqrt {{u^2} + 1} ,\quad g(x) = {{\rm{e}}^x}<br/>$ B: $<br/>f(u) = \arccos (1 + 2u),\quad g(x) = 1 + {x^2}<br/>$ C: $f(u) = \sqrt {u + 1} ,\quad g(x) = \sin x - 3<br/>$ D: $<br/>f(u) = {\ln ^2}u,\quad g(x) = \arcsin x<br/>$
- 下列各选项中，函数相同的是（ ）。 A: \(<br/>f(x) = \ln {x^2},g(x) = 2\ln x \) B: \(<br/>f(x) = x,g(x) = \sqrt { { x^2}} \) C: \(<br/>f(x) = \sqrt { { x^2}} ,g(x) = \left| x \right| \) D: \(<br/>f(x) = { { {x^2} - 1} \over {x - 1}},g(x) = x + 1 \)
- 给定DFA： [br][/br] a b A B C B D C C B E D* F G E* H I F* F G G* H I H* F G I* H I 最小化后，DFA状态有【1】个？