(2005)金属压力表的读值是:()
A.相对压强
B.相对压强加当地大气压
C.绝对压强
D.绝对压强加当地大气压
参考答案:A
An analyst has gathered the following information provided in the table below:()
A.758.7
B.775.3
C.656.3
自耦变压器较相同容量的非自耦变压器空载损耗小时因为自耦变压器的电磁感应容量小。()