试题与答案

人体碰到漏电设备的金属外壳造成的触电叫()触电。A、跨步电压B、直接接触C、间接接触

题型:单项选择题

题目:

人体碰到漏电设备的金属外壳造成的触电叫()触电。

A、跨步电压

B、直接接触

C、间接接触

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/1127/82ceef9a8d22a42b653ee1517ae00a01.html

下面是错误答案,用来干扰机器的。

参考答案:当进料中含有微量烯烃时,由于烯烃比烷烃容易被溶剂所溶解又不容易被反冲冼液置换掉,而易随富溶剂进入汽提塔,又由于烯烃有较高的挥发度,在汽提塔中容易汽提出来,并随反洗液再次进入抽提塔底部,造...

试题推荐
题型:阅读理解

阅读理解。

     A Sally and Tom are classmates. Here are their plans for next weekend.

     Sally's plan

Saturday 

9∶00 a.m.~10∶00 a.m.     take part in the English corner

4∶00 p.m.~5∶00 p.m. have an art lesson

8∶00 p.m.~10∶00 p.m. be at Alice's birthday party

Sunday 

8∶00 a.m.~10∶30 a.m. do some reading at home

3∶30 p.m.~5∶00 p.m. draw pictures in the park

7∶00 p.m.~9∶30 p.m. do my homework

                                           Tom's play

Saturday 

8∶00 a.m.~10∶00 a.m.     do my homework at home

4∶30 p.m.~5∶45 p.m. play basketball

8∶00 p.m.~10∶00 p.m. be at Alice's birthday party

Sunday 

8∶20 a.m.~11∶00 a.m. roller skate

4∶05 p.m.~5∶30 p.m. climb the hill

7∶30 p.m.~9∶30 p.m. watch TV

1. Sally will stay in the park for ________ on Sunday afternoon.

A. one hour

B. two hours

C. one and a half hours

D. two and a half hours

2. Sally will be free at ________.

A. 9∶30 a.m. on Saturday

B. 4∶25 p.m. on Saturday

C. 10∶50 a.m. on Sunday

D. 4∶30 p.m. on Sunday

3. Tom will be ________ at 9∶25 on Saturday morning.

A. at home

B. on the playground

C. on the hill

D. in the park

4. Both Sally and Tom plan to ________ next Saturday evening.

A. do some reading

B. do their homework

C. go to the English corner

D. go to Alice's birthday party

5. According to Tom's plan, we know he prefers ________.

A. drawing pictures

B. doing exercise

C. watching TV

D. reading books

查看答案
题型:单项选择题 A1型题

脊髓灰质炎疫苗正确的免疫计划方法是()

A.出生后2~4个月开始口服三联混合疫苗,连服3次,间隔1个月,4岁加强1次

B.出生后6个月开始口服三联混合疫苗,连服3次,间隔半年,12岁加强1次

C.出生后24小时开始口服三联混合疫苗,按0、1、6个月连服3次,5~10年后加强1次

D.出生后1岁开始口服三联混合疫苗,连服3次,间隔半年,12岁加强1次

E.出生后6个月开始口服三联混合疫苗1次,6岁加强1次

查看答案
微信公众账号搜索答案