【单选题】有4个数,它们的和是180,且第一个数是第二个数的2倍,第二个数是第三个数的2倍,第三个数又是第四个数的2倍,问第三个数应是( )。
【单选题】根据下面材料,回答题。 Music Used as a Healing Therapy 1 Music has long been used to treat patients suffering from different problems. In 400BC, its healing properties were documented by the ancient Greeks. More...
A.
Potential dangers of music therapy
B.
Increase in general well-being
C.
History of music therapy
D.
Other mysterious effects of music
E.
Positive physical changes caused by music
【判断题】强度是材料抵抗塑性变形和断裂的能力。 ( )
【单选题】Music therapy as a (an) ______ therapy, should be a great development in the future
【多选题】Music therapy practitioners use music to help individuals with their _______.
【单选题】强度是指材料抵抗塑性变形和( )的能力,单位是( )。
【判断题】强度是在外力作用下,材料抵抗塑性变形和断裂的能力。