并排小页面的边距重叠

Question

尝试将两个minipages并排放置在exam类中，但落点和零件号重叠（见图）。

我找不到任何关于如何解决这个问题/编辑边距大小的信息minipage。欢迎提出任何建议！

使用的代码：

\begin{parts}
  \begin{minipage}{0.45\linewidth}
   \part[3]
    \begin{tikzpicture}
    \coordinate (B) at (4,4);
    \coordinate (A) at (0,0);
    \coordinate (C) at (5,0);
    \draw[very thick] (B) -- (A) -- (C);
    \draw[fill] (3,3.2) circle [radius=0.2];
    \draw [very thick, ->] (1,3.2) node [left] {$F$} -- (2.8,3.2);
    \draw [very thick, ->] (3,3.2) -- (3,2) node [below] {$10g$};
    \pic [draw,angle radius=1.5cm,"$45^\circ$" shift={(10mm,2mm)}] {angle=C--A--B};
   \end{tikzpicture}
   \droppoints
 \end{minipage} 
 \begin{minipage}{0.45\linewidth}
   \part[3]
    \begin{tikzpicture}
    \coordinate (B) at (4,4);
    \coordinate (A) at (0,0);
    \coordinate (C) at (5,0);
    \draw[very thick] (B) -- (A) -- (C);
    \draw[fill] (3,3.2) circle [radius=0.2];
    \draw [very thick, ->] (1,3.2) node [left] {$F$} -- (2.8,3.2);
    \draw [very thick, ->] (3,3.2) -- (3,2) node [below] {$10g$};
    \pic [draw,angle radius=1.5cm,"$45^\circ$" shift={(10mm,2mm)}] {angle=C--A--B};
    \end{tikzpicture}
   \droppoints
\end{minipage}

\end{parts}

PS，我知道我的代码不是最简洁的，但希望它是清晰的——任何提示都感激不尽！