分布于植物性神经节突触后膜上的受体是（）。
A．M受体
B．N1受体
C．N2受体
D．α受体
E．β受体
参考答案：B
In your project, you have reason to believe that the current variances occurred because of extraneous factors, and you do not expect similar variances to happen in the future. What should be the estimate at complete for your project BAC=$300,000, AC=$100,000, EV=$150,000, CPI=$1.5 ？（）
A．$250,000.
B．$220,000.
C．$280,000.
D．$200,000.
某市食品药品监督管理局召开行政执法听证会，当事人周某申请记录员吴某回避，听证主持人可以决定吴某是否回避。
