搜题请搜索小程序“爱下问搜题”
问题 多项选择题

变配电工程主要是指变电所工程。变电所工程包括( )。

A．高压配电室

B．外部送电线路

C．控制室

D．变压器室

答案

参考答案：A,C,D

解析： 变电所工程包括高压配电室、低压配电室、控制室、变压器室等四个部分的电器设备安装工程。

单项选择题

Are you interested in seeing the beautiful fall foliage of New England but tired of traffic jams and overbooked hotels Then this year forget the crowds in New England and see the beautiful colors of autumn in the Catskills.
These rugged mountains in New York State, just 90 miles northwest of New York City, are famous for the legendary tales of Rip Van Winkle, and more recently for the summer hotels mat sprang up in the region during the 1940s, 1950s, and 1960s. Families trying to escape the heat of New York City found the Catskills to be the perfect place to stay for a month or so each summer. By the late 1950s there were over 500 resorts and hotels offering nighttime entertainment as well as all kinds of outdoor activities. Famous comedies like Jackie Gleason, Joan Rivers, and Sid Caesar all got their start touring the hotel clubs here. Since the introduction of air-conditioning and cheaper air travel, however, families have stopped coming to the Catskills in such large numbers, chasing instead more distant locations at different times of the year. Many of the Catskills hotels closed in the 1970s, but some remain and have expanded and changed their facilities to meet the needs of today’s visitors.
Currently, there are many activities available to the traveler besides witnessing the changing colors of the leaves. There is an all-organic sheep farm where visitors can see how a traditional sheep farm operates. There are also hundreds of miles of scenic drives in the area. Route 42, for instance, is an excellent site for spotting bald eagles. For more information on vacations in the Catskills, call the office of Public Information.

In what season would a tourist most likely have visited the Catskills in the 1950s

A．Fall.

B．Winter.

C．Spring.

D．Summer.
查看答案
单项选择题

池水的余氯含量的标准范围是（）mg/L

A.0.1-0.2

B.0.3-0.5

C.0.6-0.7

D.0.8-0.9
查看答案