光纤熔接的工艺流程包括哪几个方面？
参考答案：
光纤端面处理，轴向校准，熔接、质量评价、增强保护等。
The number of the cars owned by Shenyangers is reported to have been over 670,000 already and ______ about 275 cars a day.[ ]
A．has increased
B．is increasing
C．has increased by
D．is increasing by
肠瘘痿口的负压引流管的负压应维持在（）
A.1.5～2kPa
B.2～3.2kPa
C.3～4kPa
D.4～6.6kPa
E.7～8.5kPa
already and ______ about 275 cars a day.[ ]