下列何种均是激发态核素()
A.99mTc和99Tc
B.113mIn和113mIn
C.99mTc和113mIn
D.99Tc和113mIn
E.99mTc和113mIn
参考答案:C
We elected him ___ monitor of our class, and he gave ___ to everyone.
A.a, respects and help
B./, his respects and help
C.the, respect and honors
D./, thanks and helps
根据《反间谍法》规定,家安全机关的工作人员依法执行任务时,具备什么条件才可以进入限制进入的有关地区、场所、单位,查阅或者调取有关的档案、资料、物品?()
A.出示相应证件
B.经过有关机关备案
C.经过批准
D.经过批准,出示相应证件