10kVA-120kVA 3pH in 3pH out High Frequency Online UPS IGBT Tech US$2,399.00-6,450.00 1 Piece (MOQ) Product Details Customization: Available Phase: Three Phase Type: On-lineContact Supplier Chat Still deciding? Get samples of US$ 875/Piece Request Sample ...
一矩形基础,短边 =3m,长边 =4m,在长边方向作用一偏心荷载 FK+GK=1200kN,试问当 Pkmin=0时,最大压力应为多少( )KN/M2A.120 ;B.1
9.If we break the traffic rules, we may get a fine and even be in danger.如果我们违反交通规则,我们可能会得到罚款,甚至可能处于危险之中。10.It is also good for the environment because bicycles do not cause pollution.这对环境也很好,因为自行车不会引起污染。(原因...