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【判断题】
7 R134a制冷剂和R12制冷剂使用时可以互换。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What is the U.S. Postal service planning to do?
A.
Raise postage rates.
B.
Redesign delivery routes.
C.
Improve its services.
D.
Choose some of its post offices.
【单选题】What is the U.S. Postal Service planning to do?
A.
Raise postage rates.
B.
Improve its services.
C.
Redesign delivery routes.
D.
Close some of its post offices.
【单选题】关于气性坏疽的描述,下列错误的是
A.
干性坏疽合并厌氧菌感染所致
B.
较深的开放性创伤合并厌氧菌感染所致
C.
坏死组织呈蜂窝状
D.
按之有捻发音
E.
常伴有严重的全身中毒症状
【单选题】关于湿性坏疽的描述,下列哪项是错误的?
A.
腐败菌感染严重
B.
动脉阻塞，静脉回流正常
C.
全身中毒症状严重
D.
坏死组织与正常组织无明显分界线
E.
常见于肺、阑尾等等内脏器官
【单选题】下列关于坏疽的描述,错误的是
A.
是局部组织大块坏死合并腐败菌感染
B.
干性坏疽多发生在小肠
C.
湿性坏疽局部组织呈蓝绿色、肿胀
D.
干性坏疽局部组织呈黑色、干燥
E.
气性坏疽通常是由于合并产气荚膜杆菌感染
【多选题】Postal service in some regions in the U.S. was suspended due to extreme cold weather句子中的关键词是:
A.
postal service
B.
cold weather
C.
region
D.
suspend
【单选题】Which of the following conclusions can NOT be drawn from the passage?
A.
The U.S. Postal Service had lass than 1,100 branches in California a few decades before.
B.
The profit of the Bank of America has been reducing since the 1980s.
C.
The prospect of the Bank of America is not quite promising.
D.
Moral problem is also a factor that leads to the decline of the Bank of America.
【单选题】关于湿性坏疽的描述,下列错误的是
A.
常继发于肠、子宫及肺等内脏器官的坏死
B.
坏死组织与周围组织边界不清
C.
常有恶臭味
D.
若发生于肢体末端常有动脉、静脉的阻塞
E.
全身中毒症状不明显
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