【单选题】肾的表面包有三层被膜,由内向外依次为()
【单选题】It can be inferred from physical phenomenon ______.
A.
the force of the electromagnetic field is too weak to be harmful
B.
the force of the electromagnetic field is weaker than the electric field that the cells generate
C.
electromagnetic field may affect health
D.
only more powerful radiation can knock electron out of human body
【单选题】The probable safe level for constant exposure to electromagnetic radiation is 1 milligauss both for adults and children.
【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
【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
【简答题】肾的被膜有三层,由外向内依次为( )( )( )。