在电子线路焊接用的焊锡丝有______、______、______几种规格即可满足使

题型:填空题

问题:

在电子线路焊接用的焊锡丝有______、______、______几种规格即可满足使用要求。

考点:音响调音员初级音响调音员初级
题型:填空题

提高质粒的收获量,可以在细菌生长到足够量时加入()

A.抑制蛋白合成的抗生素

B.抑制线粒体合成的抗生素

C.抑制细胞膜合成的抗生素

D.抑制核酸合成的抗生素

E.以上都是

题型:填空题

一条河流宽100m,平均水深2m,流速为1m/s,河流坡度为1‰,岸边有一污口,则污染物在河流中达到均匀混合的长度为()。

A.37.30km

B.1.18km

C.30.53km

D.1.31km

题型:填空题

It's baseball season again,and Hank Snydder is back on the field.He has been back from the accident that kept him out of the game for the season last year,and that cost the Muggers last year's championship.Baseball fans in the city of Midvale are happy and George Brenner,the Muggers' owner,is happy too, because when Hank plays the team wins and the games sell out.“Last year's attendance was all time low when Hank was out,”said Brenner.“We're glad to have him back in uniform.”

Needless to say,the Muggers pay Hank well.But other teams have offered him a million dollars.Still,Hank has been faithful to the Muggers up to now.But there is a rumor(谣传)that Hank might play for the Suffers of Sun City next year.A newspaper reporter asked Hank if there was any truth in it.He said.“Nothing has been decided,but I have to admit that I could be leaving Midvale after this season.”What about another rumor that Hank might be getting married? “That's true.” Hank replied,“and I'm very happy about it.”

There is no need to ask how Midvale or George Brenner would feel about losing Hank.But is Hank completely happy about the changes that may be taking place in his life? “Only one thing troubles me,”he said.“I've always loved the Muggers' blue uniforms.It will take me some time to get used to the Suffers' green and gold uniforms.”

小题1:Hank Snydder didn't play for the Muggers last year because ________.

A.there were no baseball matches

B.the club didn't pay him enough money

C.other players had accidents

D.something had happened to him小题2:The Muggers didn't win the championship of last season ________.

A.because the players of the Muggers didn't take part in the games

B.because of Hank Snydder's absence

C.because all the players didn't try their best

D.because the Muggers hadn't hoped to win it小题3:Which of the following statements is not mentioned in the passage?

A.Hank Snydder still plays for the Muggers.

B.Hank Snydder has been loyal to the Muggers.

C.Hank Snydder might be getting married.

D.Hank Snydder has some trouble with his partners.小题4:If Hank Snydder joins the Suffers of Sun City next year,________.

A.the owner of the Muggers will feel happy

B.the owner of the Muggers will require him to return all the money

C.it may be a great loss to the Muggers

D.he will play for the baseball team for nothing

题型:填空题

(1)请画出图1中物块A对斜面的压力及A受到的重力的示意图.

(2)如图2所示,杠杆OA在力F1、F2的作用下处于静止状态,L2是力F2的力臂,请在图中作出F1的力臂L1和力F2

题型:填空题

女,36岁,突发尿频,尿急和尿痛,伴下腹疼痛。

首先应检查()

A.CT

B.尿常规

C.导尿测试残余尿

D.膀胱镜

E.IVU

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