2011SP-II-02
答案:C
$\begin{array}{rcl}
5-3m & = & 2n \\
3m
… Read $\begin{array}{rcl}
5-3m & = & 2n \\
3m
$\begin{array}{cl}
= & f(-2) \\
=
對於獲利的手袋,
$\begin{
當 $x=3$ 及 $y=4$ 時,$
$\begin{array}{rcl}
\an
$\begin{array}{rcl}
a & = & 2\pi
$\begin{array}{rcl}
DT \times 9 &
$\begin{array}{rcl}
$\therefore \angle ACB=90^\circ$