A motion picture content rating system is designated to classify films with regard to suit
A、there are two kinds of motor neurons
B、the lateral nuclear group is almost present in most segments of the spinal cord
C、the medial nuclear group is prominent in the segments of the cervical and lumbosacral enlargments
D、the medial nuclear group supplies the muscles of the limbs
A、respect
B、welcome
C、hospitality
D、loyalty
The two homogeneous rings in Figs. (a) and (d) and the two homogeneous disks in Figs. (b) and (c) have the same weightand radius. Forceis applied in Figs. (a) and (b). A momentis applied in Fig. (c). A block with weightis suspended in Fig. (d). Which statement is correct?
A、The angular acceleration of the ring in Fig. (a) is equal to that of the disk in Fig. (b).
B、The angular acceleration of the ring in Fig. (a) is equal to that of the disk in Fig. (c).
C、The angular acceleration of the ring in Fig. (a) is equal to that of the ring in Fig. (d).
D、The angular acceleration of the disk in Fig. (b) is equal to that of the ring in Fig. (d).
A、an oversimplified image
B、a desired image
C、a true image
D、a complicated image
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