【单选题】正常成年人每日水的摄入量和排出量大约为( )ml。
【单选题】放射性实验需要采取的正确措施是 :
A.
佩戴个人辐射剂量计,可以知道当天接受的剂量和累积剂量,并将其控制在安全水平下
B.
实验时必须带好专用的防护手套、口罩、穿工作服,实验完毕,立即洗手或洗澡。
C.
实验时,力求迅速、熟练,尽量减少被辐射的时间,并应尽可能的利用夹具、机械手来操作,以便远离辐射源,同时应设置隔离屏蔽
【简答题】太阳能电池的发展分为硅基太阳能电池和染料敏化太阳能电池,它们对应的转化原理分别是什么。
【单选题】The best title for this article is______.
A.
Harm of electromagnetic interference to airlines
B.
How to control electromagnetic field in airline
C.
Which is more dangerous, terrorist or electromagnetic interfere
D.
Measure to secure airline
【判断题】男士穿西装时,如果西装颜色是深蓝色,袜子应该穿浅色
【单选题】Although no proof yet exists of the electromagnetic disturbances observed being the results of nuclear weapons testing, diplomats are treating the situation with utmost delicacy.
A.
of the electromagnetic disturbances observed being the results of nuclear weapons testing
B.
regarding the observed electromagnetic disturbances having been the results of nuclear weapons testing
C.
that the electromagnetic disturbances observed were the results of nuclear weapons testing
D.
that nuclear weapons testing resulted in the electromagnetic disturbances having been observed
E.
that the electromagnetic disturbance observed were resulting from nuclear weapons testing