【判断题】对于三相变压器,额定电流就是指 相 电流。
【单选题】患者女,27岁。产后第36日。左乳剧烈胀痛3日。体检见左乳外下象限肿胀明
A.
触之疼痛,无明显波动感。血常规,WBC12x10°,N 0.8。乳腺B超示乳房后壁有一3mx4cm暗区。经穿刺,可抽取少量黄白色脓性液体。下列治疗措施正确的是
【单选题】听力原文:W: What are you doing, Bill? Writing a letter? M: Yes, and it's not easy. W: My Aunt Mabel sent me a gift for my birthday. I can't remember which gift was hers, but I want to thank her for it. M:...
A.
She doesn't know how to write a letter.
B.
She never receives any gifts.
C.
She has received too many gifts from her Aunt Mabel.
D.
She can't remember what gift her Aunt Mabel sent her.
【单选题】X6132型万能铣床工作台快速移动时,在其六个方向上,工作台可以由电动机( )拖动和快速离合器YC配合来实现快速移动控制。
【单选题】X6132 型万能铣床工作台快速移动时,在其六个方向上,工作台可以由电动机Ms拖动和快速离合器( )配合来实现快速移动控制。