长输管道焊接完成后,对焊缝应进行( )外观检查。
A.50%
B.80%
C.90%
D.100%
参考答案:D
— It is important for you to find appropriate course at college.
—I can't agree more.It's decision that affects the whole family.
A.the, the
B.an, the
C.an, a
D.the, a
男性,33岁,咳嗽、发热1周,体温38.5℃,皮肤有大块瘀斑,血红蛋白85g/L,白细胞3×109/L,中性0.32,淋巴0.64,未见幼稚细胞,血小板3.2×109/L,凝血酶原时间15秒(对照12秒),3P试验弱阳性。最可能的诊断是()
A.再生障碍性贫血
B.急性白血病
C.肺炎并发DIC
D.原发性血小板减少性紫癜
E.维生素K缺乏症