晚期血吸虫病综合征包括:() ["肝脾肿大","腹腔积液","门脉高压","静脉曲张","精神症状"]
按螺杆根数分,螺杆泵可分为单螺杆泵、双螺杆泵、三螺杆泵和()等几种。 ["A、四螺杆泵","B、五螺杆泵","C、容积泵","D、离心泵"]
当采集站在炮井附近放炮时采集站应放在炮井的()。 ["上风方向","下风方向","左边","右边"]
急性血吸虫病的常见临床表现为:() ["尾蚴性皮炎","肝硬化","发热","上消化道出血","痉挛"]
0.01010是几位有效数字。() ["三位","四位","五位","六位"]
Cycle Time也就是C/T的意思是?