下述哪种疾病,CT诊断价值优于MRI()
A.主动脉夹层动脉瘤
B.识别纵隔淋巴结
C.室壁瘤、心房黏液瘤
D.肺间质纤维化
E.先天性心脏病
参考答案:D
_________ everyone can hear the speaker, there is no _________ in turning up the radio.
A.Even if ; point
B.Now that; point
C.Now that ; need
D.Even if; need
电压lkV以下和容量在100kW以下的电动机,转子绕组的绝缘电阻不得小于()。
A.0.5MΩ
B.1.0MΩ
C.1.5MΩ
D.2.0MΩ