双侧提睾反射消失见于哪个节段的脊髓损害()
A.腰髓1~2
B.腰髓2~3
C.腰髓3~4
D.腰髓4~5
E.腰髓5~骶髓1
参考答案:A
—What will happen if more and more people buy cars?
—I think there will _____ traffic jams on the main roads. [ ]
A. more
B. fewer
C. least
D. less
主风机组的状态监控系统包括()。
A、轴承温度监测
B、轴承振动监测
C、轴承位移监测
D、主风流量监测