A.小于36V
B.等于36V
C.不高于36V
D.不低于
答案:C
His family members gave some examples of_____ his drinking and smoking had affected the family.
A.that
B.why
C.how
D.what
设想人类开发月球,不断地把月球上的矿藏搬运到地球上,假定经过长时间的开采后,地球和月球仍看成是均匀球体,则开采过程中地球与月球间的万有引力( )
A.逐渐增大
B.逐渐减小
C.先逐渐增大后逐渐减小
D.先逐渐减小后逐渐增大