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【单选题】
患者男性，42岁，体检时B超发现肝内多发实质占位性病变，无寒战、高热等症状，否认乙肝、肝硬化及血吸虫病史。查体：肝肋下未扪及，Hb105g/L，WBC5.3×10 9 /L，血AFP6.1μg/L，CEA2.5μg/L，SCC-Ag121.5μg/L。血囊虫、弓形虫、血吸虫及绦虫抗体均阴性。 18 F-FDGPET/CT显像示：肝内多发低密度影放射性分布异常浓聚，SUVave3.6～5.2，SUVmax4.5～8.6，双肺胸膜下多发小结节，结节未见放射性分布异常浓聚，食管胸下段可见一长约3cm放射性分布异常浓聚影，SUVave4.9，SUVmax6.5。手术中，对切除不彻底的病变留置金属标记，6再行局部放疗，为评估放疗效果，再次行 18 F-FDGPET／CT显像，结果示金属标记影处及周边可见局灶性浓聚影，为排除由于CT衰减校正时过度补偿所致的PET伪影，应采取的有效措施是（）
A.
比较PET衰减校正图与PET非衰减校正图
B.
增加 18 F-FDG注射剂量，再次 18 F-FDGPET／CT显像
C.
重新 18 F-FDGPET／CT显像
D.
增大PET/CT显像时CT扫描电流、电压
E.
加做CT增强扫描
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举一反三
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【单选题】An indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer’s vessel. Which of the following is NOT a characteristic of indirect echoes? （）
A.
Their bearing is almost constant，even when the true bearing of the contact changes appreciably
B.
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C.
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To ensure that the banks have sufficient fund to finance other economic sectors.
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To protect the banks from all kinds of risks arising from their operation.
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【单选题】拙政园的留听阁之名取自“留得残荷听雨声”,诗的作者是。
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B.
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C.
李商隐
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【判断题】《教师专业标准》是国家对幼儿园、小学和中学合格教师专业素质的基本要求,是教师实施教育教学行为的基本规范,是引领教师专业发展的基本准则,是教师培养、准入、培训、考核等工作的重要依据。()
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A.
introduces the topic of the data and provides details such as amounts which show the main trends.
B.
introduces the topic and provides a general overview of the main trends in the data without any specific details.
C.
introduces the topic of the data and provides the writer’s opinion about the data.
查看完整题目与答案
【单选题】An indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer’s vessel. Which of the following is NOT a characteristic of indirect echoes?（）.
A.
Their bearing is almost constant，even when the true bearing of the contact changes appreciably
B.
They always appear on a bearing of 90°from the true bearing of the contact
C.
The indirect echoes usually appear in shadow sectors
D.
When plotted，their movements are usually abnormal
查看完整题目与答案
【单选题】An indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer’s vessel. Which of the following is NOT a characteristic of indirect echoes? （）
A.
Their bearing is almost constant，even when the true bearing of the contact changes appreciably
B.
They always appear on a bearing of 90°From the true bearing of the contact
C.
The indirect echoes usually appear in shadow sectors
D.
When plotted，their movements are usually abnormal
查看完整题目与答案
【单选题】英国政府在其白皮书《教学质量》中，列为鉴别合格教师的标准之首的是（）。
A.
高超的教学技巧
B.
丰富的教学经验
C.
适宜的个性品质
D.
渊博的学科知识
查看完整题目与答案
【单选题】What is the main function of deposit insurance fund?
A.
To ensure that the banks have sufficient fund to finance other economic sectors.
B.
To protect the banks from all kinds of risks arising from their operation.
C.
To meet requirements of financial needs of the public.
D.
To pledge to depositors that their money is safe whenever a bank is insolvency.
查看完整题目与答案