当组件放置到支架上时，锁定组件。 A: When the unit is on its mounting, lock it. B: Anytime the unit is on its mounting, lock it . C: Once the unit is on its mounting, lock it. D: Upon putting the unit on its mounting, lock it.

The operation of _______two alternators requires the voltages to be equal and also in phase A.paralleling B.series-mounting C.running D.controlling

The time series is mainly divided into absolute number time series, relative number time series and ( ). A: Period series B: Time-point series C: Chronological series D: Average time series

______ , mounting costs have forced the museum to close. (regret)

如果定义函数计算调和级数之和;series::Int-Float用series n表示[img=242x25]1803c461290438b.png[/img]，那么如何用series 表示[img=191x25]1803c46130ff710.png[/img]？ A: series n-1 B: series (n-1) C: series 1 + series 2 + ... + series (n-1) D: series (1+1/2+..+ 1/n-1)

Initially the song brocade was mainly used for mounting painting and calligraphy works

下列关于Series说法正确的是（） A: Series是一个类似一维数组的对象 B: Series可以保存任何类型的数据 C: Series由数据和索引构成 D: Series结构的数据位于索引的左侧

They______the mounting evidence of discrepancies in the report as justifying a new investigation. A: beckoned B: invoked C: subpoenaed D: conjured

English<br/>is undoubtedly the( )foreign<br/>language taught in China. A: concerning B: mounting C: increasing D: dominating

中国大学MOOC:请在下面空格处填写答案。>>>frompandasimportSeries>>>sa=Series([a,b,c],index=[0,1,2])>>>sb=Series([a,b,c])>>>sc=Series([a,c,b])>>>sa*3+sc*20aaaaa1______2cccbb