【单选题】患者,女,45岁。进行性贫血,皮肤可见散在出血点、瘀斑,月经量多3年,间断发热半年。血常规:Hb 50g/L,RBC 1.5×1012/L,WBC 1.8×109/L,PLT 45×109/L。骨髓涂片增生减低。进一步明确诊断,需做检查是 ( )
【简答题】设函数 试研究函数f(x)在点x=0处的连续性。
【单选题】患者女,50岁。进行性贫血一年半,体检:左肋下缘触及包块,位置较深,边缘钝圆,并且无切迹,随呼吸上下移动,质地不硬。诊断应考虑为( )
【单选题】Uncle Liang __________ in Haikou since 1980 , so he knows a lot about the city.
【单选题】Uncle Liang ________ eats out because his wife always makes delicious food for him.
【单选题】以下对于黄金期权表述不正确的是( )
C.
黄金期权期货交易具有风险有限、收益无限的特点
【单选题】Uncle Liang _______ eats out because his wife always makes delicious food for him at home.
【单选题】通常市售的硫酸是密度为 1.84 kg·L -1 ,它的物质的量浓度 c (H 2 SO 4 ) 为 18 mol·L -1 , H 2 SO 4 的质量分数是
【判断题】椭圆、圆、椭圆或竖线,这种几何像差叫像散