A non-return valve in the air delivery line near to the compressor must be （）type similar to the compressor discharge valve. ["the low inertia","the high inertia","the low velocity","the high velocity"]
小方量钢筋混凝土基础楼面站由（）施工。 ["土建单位","各区域负责人","配套单位","勘察单位"]
东北地区鲤鱼和鲢鳙鱼种怎么培育才省钱？
Anchoring and fishing in this area are（）. ["danger","dangerous","dangerously","dangering"]
当用户使用63010044.png矩形选择工具、63010053.png圆形选择工具选择图像时，在松开鼠标前按下（）可以移动所绘制的图形。 ["Ctrl键","Alt键","Shift键","空格键"]
如何判断草鱼鱼苗、鱼种的质量？
