肺癌的早期表现是()
A.咳嗽、咳血痰
B.颈、面部水肿
C.持续性低热
D.咳嗽、咳脓痰
E.持续性胸痛
参考答案:A
解析:
肺癌的早期表现是咳嗽、咳血痰。
心血管核医学中,次极量踏车运动试验,心率应达到最大心率的()
A.50%
B.85%
C.90%
D.100%
The policeman caught the thief ______ has stolen Mr. Li’s computer.
A.which
B.whose
C.whom
D.who