并联电容器组交接试验,总容量3Mvar及以上电容器组电容量偏差为()%。 A.0%~

题型:单项选择题

问题:

并联电容器组交接试验,总容量3Mvar及以上电容器组电容量偏差为()%。

A.0%~+5%

B.-5%~0%

C.-5%~+5%

D.-2%~+2%

考点:变电五通考试变电五通考试题库
题型:单项选择题

阅读理解。

Phillip Island Penguins(企鹅)

The Little Penguin has called Phillip Island home for untold generations. Get to Phillip Island in plenty

of time to watch a summer sunset at Summerland Beach-the stage is attractively set to see the Little

Penguin leave water and step onto land.

· Leave Melbourne at 5:30 pm. for a direct journey to Phillip Island

· See the Gippsland area-Guinness Book of Records place for the world's longest earthworm (蚯蚓)

· Journey along the coastal highway around the Bay with French Island and Churchill Island in the

distance

· Cross the bridge at San Remo to enter Phillip Island-natural home for Little Penguins and many

animals

· Take your place in special viewing stands(看台) to watch the daily evening performance of the wild

Little penguins

Ultimate Penguins (+U)

Join a group of up to 15. This guided tour goes to an attractive, quiet beach to see Little Pen-guins.

You can see penguins at night by wearing a special pair of glasses.

Adult (成人) $ 60.00      Child $ 30.00

Viewing Platform Penguin Plus (+V)

More personalized wildlife viewing limited to 130 people providing closer viewing of the penguin

arrival than the main viewing stands.

Adult $ 25.00       Child $ 12.50

Penguin Skybox (+S)

Join a group of only 5 in the comfort of a special, higher-up viewing tower. Gain an excellent overview

of Summerland Beach.

Adult 16 yrs + $ 50.00

1.What kind of people is the text mainly written for?

A. Scientists.

B. Students.

C. Tourists.

D. Artists.

2.We can learn from the text that Little Penguins __________.

A. have been on Phillip Island for years

B. keep a Guinness record for their size

C. are trained to practice diving for visitors

D. live in large groups to protect themselves

3.How much would a couple with one child pay for a closer viewing tour?

A. $ 37.50.      

B. $ 62.50.    

C. $ 180.00.      

D. $ 150.00.

题型:单项选择题

一小型水电站,其交流发电机的输出功率为1000kW,输出电压为1000V,在输电过程中,要求能量损耗为总功率的4%,已知输电线电阻为16Ω,用户降压变压器的输出电压为240V,求送电线路中,升压变压器与降压变压器的匝数比各为多大?

题型:单项选择题

结脉、促脉、代脉,其脉象的共同特点是

A.止无定数
B.脉来缓慢
C.脉来较数
D.止有定数
E.脉来时止

题型:单项选择题

现行系统中,单笔开卡起始金额为()。

A、0元

B、1元

C、5元

D、50元

题型:单项选择题

钢材的焊接性能主要与()有关。

A.强度

B.塑性

C.含碳量

更多题库