运动技术诊断只能是由运动生物力学工作者借助专用仪器进行的一项工作。
参考答案：错
Which is a distress signal? （）
A.A triangular flag above or below a ball
B.The International Code Signal of distress indicated by "JV"
C.A green smoke signal
D.Flames on the vessel as from a burning tar barrel
瞬态过电压（transient overvoltage）
