不定项选择

‏注射抗毒素应注意避免引起I型超敏反应。‌

A．错误
B．正确

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单项选择题

远程自动抄表简称（）

A.AMR
B.ARM
C.CPP
D.DDT

单项选择题

Which of the following was not the job of flight attendants in the 1920s

A．To carry passengers’ luggage.
B．To serve the meals.
C．To help the pilot put in fuel.
D．To help passengers who felt sick.