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【判断题】
贝氏体是过冷奥氏体中温转变产物，在转变过程中，碳原子能进行短距离的扩散，而铁原子不能进行扩散。( )A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】The World Health Organization gave a warning to the public without any ________ when the virus of H1N1 hit Mexico in April, 2009. [ ]
A.
delay
B.
effort
C.
schedule
D.
consideration
【单选题】有关肿瘤经皮穿刺活检的描述中,哪项是错误的
A.
麻醉药物到达深度与定位深度基本一致
B.
肿瘤较大时，取材应选择在肿瘤边缘部分的生长活跃区或采取多方向取材
C.
在保证标本数量的前提下，应尽量减少穿刺次数
D.
抽吸活检术时，负压抽吸过程中应小幅度推进与退出几次，退出过程中应继续抽吸直至标本放入瓶内，以免标本掉落
【单选题】How did smoke go out in ancient castles?
A.
Through the chimney.
B.
Through a hole in the roof.
C.
Through the windows.
D.
Through the doors.
【简答题】He stil has _________________(difficult) swallowing
【单选题】It was reported yesterday that an official in the department of health was arrested for his________his power to get benefit for his relatives. [ ]
A.
protecting
B.
catching
C.
abusing
D.
taking
【简答题】The spy looked cau______ around and then walked away from the cinema and disappeared into the dark.
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