最有助于有机磷农药中毒诊断的体征有()
A.瞳孔缩小
B.瞳孔散大
C.肌肉震颤、痉挛
D.流涎、多汗、口吐白沫
E.急性肺水肿
参考答案:A, C, D, E
I am very grateful to my high school teachers, without _____ help I wouldn't be so excellent.[ ]
A. whom
B. them
C. which
D. whose
下列各选项中,()不是绘制圆弧的方式。
A.三点
B.起点、端点、半径
C.两点
D.圆心、起点、端点