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【单选题】
心肺复苏,哪一项不正确( )A.
标准胸外按压,心输出量为正常的20%~30%
B.
心脏停跳20~25分钟后,复苏效果迅速下降
C.
复苏时脑血流不受停跳时间长短的影响
D.
标准胸外按压时血压为60/40mmHg左右
E.
末梢变红表示复苏有效
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反馈参考答案：
举一反三
【多选题】下列论述正确的有( )。
A.
通常量规通规长度与配合长度相等
B.
量规止规长度比通规长度短
C.
光滑极限量规结构完全符合泰勒原则
D.
轴用量规做成环规或卡规都应是全形量规
E.
小直径孔用量规的止规可以做成全形量规
【单选题】Listen to Track 50.
A.
To indicate that he is about to explain what type of drawing he wants
B.
To help students understand a term that may be confusing
C.
To indicate that he used the wrong word earlier
D.
To motivate the students to do better work
【单选题】—Can I help you, sir? —______.
A.
Yes, you can help me
B.
No, I don’t need any help
C.
Of course, if you like
D.
No, thanks, I’m being served
【简答题】为了满足泰勒原则，光滑极限量规的通规理论上应做成______，止规应做成______，否则，工件的形状误差就应另外测量和控制。
【单选题】A newspaper ______ is an amusing drawing, usually about some event in the news.
A.
cartoon
B.
picture
C.
photo
D.
badge
【简答题】根据组成不同,油品在低温下失去流动性的原因有 和
【单选题】—Can I help you，dear? —Yeah,l don’t know a banana milk shake. Maybe you can teach me.
A.
what to do
B.
when to make
C.
how to make
D.
why to do
【简答题】Operator: Motorola Beijing ___1___. Can l help you? Customer: Well,I'm afraid there is something ___2____ with my cell phone. Operator: I see. We provide you with a variety of _______3____ to increase...
【简答题】Listen to the recording and fill in the blanks. Through drawing, the kids can show their 1 . By working with origami paper, the children learn to make their own 2 . Sierra wants all of the projects t...
【简答题】The hip-hop singer is always drawing attention to issues that are usually ignored.That’s is so great about him.
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