【单选题】His disabled legs _______ him to a wheelchair all his life.
【单选题】Although thrift all his life, the man left the ________ fortune to his son.
【单选题】Because of bribery, he was sentenced to death and was ______ political right all his life.
【简答题】He has been with the same employer all his working life.
【单选题】Yuan Long-ping has devoted all his life to the agricultural research, and finally his efforts ________him great achievement and world fame.
【单选题】一般情况下,平面任意力系向平面内任选的简化中心简化,可以得到一个主矢与主矩,( )。
A.
主矢与简化中心的位置无关,主矩一般与简化中心的位置无关
B.
主矢与简化中心的位置有关,主矩一般与简化中心的位置无关
C.
主矢与简化中心的位置无关,主矩一般与简化中心的位置有关
【单选题】一般情况下,平面任意力系向平面内任选的简化中心简化,可以得到一个主矢与主矩。( A )
A.
主矢与简化中心的位置无关,主矩一般与简化中心的位置有关
B.
主矢一般与简化中心的位置有关,主矩与简化中心的位置无关
【简答题】Carver battled all his life against the disposal of waste materials, and proposed that substitute be developed to______.
【单选题】一般情况下,平面任意力系向平面内任选的简化中心简化,可以得到一个主矢与主矩,下列说法正确的是()
A.
主矢与简化中心的位置无关,主矩一般与简化中心位置有关
B.
主矢与简化中心的位置有关,主矩一般与简化中心位置无关