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【单选题】
适当缩小取样框对彩色多普勒血流显像的主要作用是
A.
防止血流信号'过溢'到血管外
B.
即使血流速度过不出现信号混叠现象
C.
提高彩色信号灵敏度,提高帧频
D.
可使血流速度随意增大
E.
可减慢血流速度
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举一反三
【单选题】—Does Bob have vegetables for dinner? —______. But his sister has some carrots.
A.
Yes, he has
B.
No, he hasn’t
C.
Yes, he does
D.
No, he doesn’t
【单选题】Does Bob has any experience in advertising.
A.
Yes, he does.
B.
No, he doesn't.
【单选题】– Does your aunt have _____ friends in Quanzhou? – Yes, she has _____ good friends here.
A.
any; any        
B.
some; any       
C.
any; some
【单选题】听力原文:M: Does John have your suitcase? W: No, Bob does. Who has the suitcase?
A.
The woman.
B.
Bob.
C.
John.
【单选题】“POS机”的含义是“销售点终端机”,供持卡人刷卡消费使用。请问,“POS”是下列哪三个英文单词的缩写?
A.
Point of sale
B.
Purchase on spot
C.
Pick option sell
【多选题】为了保证高压蓄电池的稳定工作,定期保养增加了高电压蓄电池的检查项目
A.
外观检查
B.
绝缘检查
C.
高压线束检查
D.
HDS 数据 检查
【单选题】The experiment has _____ the possibility of the existence of any life on that planet, but it does not mean there is no life on other planets. [     ]
A.
found out
B.
pointed out
C.
ruled out
D.
carried out
【单选题】_____ they _______ any bananas? [     ]
A.
Do, has
B.
Do, have
C.
Does, have
D.
Does, has
【简答题】根据汉语完成句子 首先,你不能跑。 ______ ______, you mustn't run.
【单选题】听力原文:M: Does John have your pictures? W: No, Bob does. Who has the pictures?
A.
The woman.
B.
Bob.
C.
John.
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