论述室内和小区分布系统季度维护中需要完成的工作任务。室内和小区分布系统季度维护主要是

____________, I’d like to say how much I’ve enjoyed staying in your beautiful country.

A．To include

B．As conclusion

C．To conclude

D．In the conclusion

The old lady _________when I was in the countryside is said to be still very much alive though in her nineties.

A．after whom I looked

B．whom I took care

C．who I looked after

D．of whom I took care

下列人体组织中声能衰减系数最大的是（）

A.颅骨

B.脂肪组织

C.肌肉组织

D.肝脏组织

E.血液

无差异曲线向上弯曲的程度大小反映投资者的满意程度。（）

在进行模块测试时，要为每个被测试的模块另外设计两类模块；驱动模块和承接模块，其中______的作用是将测试数据传送给被测试的模块，并显示被测试模块所产生的结果。