杆上隔离开关安装要求刀刃合闸时接触紧密,分闸后应有不小于()mm的空气间隙。A.14

题型:单项选择题

问题:

杆上隔离开关安装要求刀刃合闸时接触紧密,分闸后应有不小于()mm的空气间隙。

A.140;

B.160;

C.180;

D.200。

考点:线路运行与检修专业考试配电线路(中级工)配电线路(中级工)题库
题型:单项选择题

根据短文内容,判断句子正(T)误(F)。

     In our city there is a big zoo. There are many animals in it. There are some beautiful tigers and lions.

They eat much meat every day. 

     There  are  also two big  elephants  and a baby one. Children like to ride on them. The elephants are

kind. They eat much grass and many bananas. Elephants like bananas very  much. In the zoo  there  are

also brown (棕色的) bears, black bears and white bears. They are all slow and clumsy (笨拙的). They

stand on their back legs and lift (抬起) their front legs to ask for food. They like cakes very much.

( )1. Tigers and lions like to eat grass and bananas.

(     )2. There are three elephants in the zoo.

( )3. Children like to ride the elephants in the zoo.

( )4. The elephants are all slow and clumsy.

( )5. The bears always ask for food with their back legs.

题型:单项选择题

喉部的良性肿瘤是指喉良性真性肿瘤,在病理上可分为_______和_______两大类,喉良性肿瘤以_______瘤最为常见。

题型:单项选择题

患者,男,35岁。3周前突患肩臂疼痛,伴有麻木不仁、活动受限,受凉则痛势加剧,近3日病势有增,项背强痛不能转侧。用药宜首选( )

A.独活、僵蚕
B.桑寄生、川牛膝
C.羌活、葛根
D.秦艽、木瓜
E.威灵仙、鸡血藤

题型:单项选择题

接触电位差是指接地故障电流流过接地装置时,在地面上离设备水平距离为( )处与设备外壳、架构或墙壁离地面的垂直距离为( )处两点间的电位差。

A.0.6m、1.5m;
B.0.8m、1.8m;
C.1.0m、2.0m;
D.1.2m、2.5m。

题型:单项选择题

若有: int a=10,b=9,c; 则在计算表达式c=(a%11)+(b=3),c+=2后,变量c的值为 [6]

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