当前位置:考试网  > 试卷库  > 技能鉴定  > 其他类  > 四小证  > 精通救生艇筏和救助艇(Z02)  >  无线电话的工作频率为2181KHZ 。
试题预览

无线电话的工作频率为2181KHZ 。

1、正确
2、错误
查看答案
收藏
纠错
正确答案:

正确

答案解析:

暂无解析

你可能感兴趣的试题

“Earlytobed,earlytorise”makesamanhealthy,wealthyandwise.It'sgoodforthebody.Thisisanoldsaying.Haveyouheardofitbefore?Itmeansthatwemustgotobedearlyatnight,andgetupearlyinthemorning.Thenweshallbehealthy.Weshallalsoberichandclever.Thatistrue.Thebodymusthaveenoughsleeptobehealthy.Childrenofyoungageshouldhaveenoughsleep,ortheycan'tdotheirworkverywell.Theywillnotbewiseandtheymaynotbecome。wealthy!.Thebodyalsoneedsexercise:walking,running,jumping,swimming,playinggamesandallother。exercise.Exercisekeepsthebodystrong.Exercisealsohelpsthebloodtomovearoundinsidethe.body.Thisisveryimportant.Ourbloodtakesfoodtoallpartsofourbody.Theheadalsoneeds.blood.Exercisehelpsustothinkbetter.

根据短文内容,回答问题.

1.Whatdoes“earlytobed.earlytorise”mean?

2.Whatmustthebodyhavetobehealthy?

3.WhatwillhappentoChildrenofyoungagewhodon'thaveenoughsleep?

4.Whatkeepsthebodystrong?

5.Whattakesfoodtoallpartsofourbody?

水稻分蘖期间,农民拔草、治虫;排水晒田。稻谷收获之后,有的农民焚烧稻秆。下列叙述错误的是()

JackisateacherofEnglish.Heisnotyoung,butheisnotold.Hehasaroundfaceandblackhair.Heistall.Therearefiftystudentsinhisclass.Theyalllikehim.Nowit'sintheafternoon.Look,somestudentsareworkingintheclassroom.Jackisthere,too.HeishelpingthemtostudyEnglish.Heisagoodteacher,andheisagoodfriendofthemall.

()1.WhatdoesJackdo?

A.Heisaworker.

B.Heisateacher.

C.Heisadoctor.

D.He'sanurse.

()2.Whatcolourishishair?

A.It'sblack.

B.Hisheiriswhite.

C.Itisbrown.

D.Hehasyellowhair.

()3.Howmanystudentsarethereinhisclass?

A.Therearefifteenstudentsinhisclass.

B.There'sfifty.

C.Hehasfifty.

D.There'refiftyinit.

()4.Jackisagoodteacher,isn'the?

A.Yes,heisn't.

B.No,heis.

C.Yes,he's.

D.Yes,heis.

()5.Whatarethestudentsdoingintheclassroom?

A.Theyarewalkingthere.

B.Theyaredoingtheirlessons.

C.Theyarehelpingtheirteacher.

足球比赛时,裁判用抛硬币猜正反面的方法让双方决定谁先要场地,谁先要发球权.这种做法是________的,因为________.

Ithinkthe______(four)lessonisthemostdifficultinthisbook.

热门试题 更多>
试题分类: 危险化学品生产单位
练习次数:0次
试题分类: 食品药品安全监察员
练习次数:4次
试题分类: 金属非金属矿山(地下矿山)
练习次数:2次
试题分类: 特种设备安全监察员
练习次数:18次
扫一扫,手机做题