成人每24小时排尿量不足多少为无尿（）
A.110ml
B.100ml
C.50ml
D.120ml
E.10ml
参考答案：B
采用Optix155/622H组成相交环时，相交两环的工作速率不能够为（）。
A.STM-1和STM-1
B.STM-1和STM-4
C.STM-4和STM-4
D.无任何变化
-He sighed again and the failure in physics seemed to have completely his confidence.
A．injured
B．ruined
C．attacked
D．damaged
