计算2-(-1)2等于[ ]
A.1
B.0
C.-1
D.3
答案:A
— I can help you with your English.
—___________.
A.I’m sorry to hear that.
B.Thank you.
C.Yes, you can.
D.That’s all right.
空气流量传感器将发动机的进气流量转变为相应的电信号,是电子控制器计算()、确定()的重要参数之一。