由波动的垂直力偶所产生,使柴油机绕水平轴纵向摆动的振动形式称为()。
A、颤抖振动
B、摇摆振动
C、俯仰振动
D、偏摇振动
参考答案:C
下列不属于抑郁的表现的特点的是()
A、情绪低落
B、思想缓慢
C、语言动作减少和迟钝
D、强迫性动作
At the wholesale store you can buy an 8-pack of hot dogs for $1.55, a 20-pack for $3.05, and a 250-pack for $22.95. What is the greatest number of hot dogs you can buy at this store with $200 ?()
A. 1,108
B. 2,100
C. 2,108
D. 2,124
E. 2,256