成片绿地的定点、放线有()、网格法、交会法三种。
参考答案:平板仪法
The experiment shows that proper amounts of physical exercise, if _______ regularly, can make a
difference to our health.[ ]
A. being carried out
B. carrying out
C. carried out
D. to carry out
急性胆囊炎术中发现胆囊内有多发绿豆大小结石,宜采用()
A.胆囊造口术
B.胆囊切除术
C.胆总管切开T管引流术
D.括约肌切开术
E.胆囊切除、胆总管探查T管引流术