You have made a few spelling mistakes in your composition but ________, it's well written.[      ]

A. first of all  

B. on the whole

C. on the other hand  

D. after all

下列建筑安装工程检验批项目，属于主控项目的检验内容是（）。

A.管道焊口外露油麻

B.管道压力试验

C.风管系统的测定

D.电梯保护装置

E.卫生洁具舒适性