皮皮学，免费搜题
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【多选题】
把复杂的机械系统简化为一个构件,此构件称为( )。即系统的( )。A.
等效构件
B.
等效动力学模型
C.
等效条件
D.
等效静力学模型
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】在狭水道中航行的船舶,顺流过弯曲水道时,如果靠近凸岸太近,船首将受弯处回流的作用而向()偏转,船尾也受到流压的作用而向()偏转。
A.
凹岸;凸岸
B.
凹岸;凹岸
C.
凸岸;凹岸
D.
凸岸;凸岸
【单选题】听力原文：M: Good morning. Can I help you? W: Hello. My name’s John Bush and I' m intending to go to a conference in Sydney for three weeks. M: I see. Do you want the excursion fare or the full return fare...
A.
Sightseeing in Australia and the Far East.
B.
Visiting a friend in Cairo.
C.
Attending a conference in Sydney.
D.
Shopping in Hong Kong.
【单选题】24岁初孕妇。妊娠33周，头痛6天，经检查血压160／110mmHg，治疗3天无显效。今晨5时突然出现剧烈腹痛。检查子宫板状硬。最可能的诊断是
A.
妊娠合并急性阑尾炎
B.
胎盘早剥
C.
前置胎盘
D.
先兆子宫破裂
E.
先兆早产
【单选题】听力原文：M: Good morning. Can I help you? W: Hello. My name's John Bush and I'm intending to go to a conference in Sydney for three weeks. M: I see. Do you want the excursion fare or the full return fare?...
A.
Sightseeing in Australia and the Far East.
B.
Visiting a friend in Cairo.
C.
Attending a conference in Sydney.
D.
Shopping in Hong Kong.
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