皮皮学，免费搜题
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【单选题】
Part A Directions: You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer ― A, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the question and you will hear each dialogue ONLY ONCE. 听力原文：M: Do you really mean you want to quit this job? W: Well, maybe I' d better give it a second thought. What is the woman going to do?A.
Come back again to apply for the job.
B.
Get some training before she quits her job.
C.
Apply for an additional part-time job.
D.
Think about whether she wants to resign.
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皮皮学刷刷变学霸
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【单选题】质点系动量守恒的条件是（）
A.
作用于质点系的主动力的矢量和恒为零
B.
作用于质点系的外力的矢量和恒为零
C.
作用于质点系的约束反力之和恒为零
D.
质点系的动量矢量和为零
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A.
利多卡因静脉注射
B.
胸外心脏按压
C.
开胸心脏按压
D.
直流电击除颤
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【单选题】患者王某 , 车祸后突发心搏骤停 , 心电图显示为心室颤动 , 治疗室颤最有效的方法是 (
A.
利多卡因静脉注
B.
胸外心脏按压
C.
开胸心脏按压
D.
直流电击除颤
E.
人工心脏起搏