完井液的滤失量是越大越好。
参考答案：错
解析：完井液的滤失量是越小越好。
______in health,he insisted on doing the experiment.
A．As he was poor
B．Poor as he was
C．Poor was he
D．Poor he was though
欲调查某地人群HBsAg携带情况，可采用（）
A.个例调查
B.前瞻性调查
C.抽样调查
D.暴发调查
E.回顾性调查
