白血病其克隆中的白血病细胞表现为（）
A.分化增多
B.凋亡受阻
C.分化受阻
D.分化障碍
E.增殖失控
参考答案：B, D, E
欠费构成分析的内容有哪些？
How should cargo tank hatches be protected when the ullage opening is open and the tank not gas free?（）.
A.With gooseneck vents
B.With warning signs
C.With flame screens
D.With pressure-vacuum relife valves
