采用仰卧牵臂压胸人工呼吸法，不能急救低压触电者使其恢复心脏跳动。（）
参考答案：错
I walked in our garden, _______ Tom and Jim were tying a big sign onto one of the trees.
A．which
B．when
C．where
D．that
企业计算机信息系统的开发方法？
