下列分子中所有原子都满足最外层8电子结构的是( )
A.光气(COCl2)
B.六氟化硫
C.二氟化氙
D.三氟化硼
答案:A
证明甲状腺单发结节为恶性,主要依据是
A.扫描为冷结节B.结节硬C.同侧可扪及肿大淋巴结D.结节穿刺检查E.以上都不是
During activity sequencing,you identify and document interactivity dependencies.All the following are outputs from activity sequencing process EXCEPT ().
A.project schedule network diagrams
B.activity attribute updates
C.requested changes
D.milestone list