【单选题】急性腹膜炎已明确诊断,决定手术治疗,术前处理不妥的是
【判断题】变压器的空载损耗主要是铁心中的损耗;损耗的主要原因是磁滞和涡流。
【单选题】φ10@100/200(4)表示?
A.
箍筋为HPB300钢筋,直径为10,加密区间距为100,非加密区间距为200,均为四肢箍
B.
箍筋为HPB300钢筋,直径为10,加密区为100,非加密区200,双肢箍
C.
箍筋为HRB335钢筋,钢筋直径为10,加密区400非加密区200,四肢箍
【单选题】W: I do hope Peter do well in his studies this semester. M:__________
B.
Yes. Dear. But I am afraid the school is not nice enough.
C.
Neither do I. I don't think his words would be as good as gold.
D.
Yes. Although we believe our son is honest, he may not work hard enough as he says.
【判断题】空载运行时,由于变压器一次侧绕组电阻上的铜耗远小于铁芯损耗,因此变压器的空载损耗主要是铁芯损耗。