相对于单级振荡式发射机,主振放大式发射机具有()的特点。 A.频率稳定度高 B.发射

题型:单项选择题

问题:

相对于单级振荡式发射机,主振放大式发射机具有()的特点。

A.频率稳定度高

B.发射频率高

C.输出功率稳定

D.发射频率低

考点:民用航空气象人员考试雷达原理雷达原理题库
题型:单项选择题

选出下列黑体字注音没有错误的一项(    )

A.偌大(ruò)慰藉(jiè)黏合(niān)

B.僻静(pì)贫瘠(jí)悲怆(chuāng)

C.发轫(rèn)桑梓(zǐ)蕞尔(zuì)

D.烙印(luò)搭讪(shàn)悠邈(miǎo)

题型:单项选择题

近年来,北京市大力发展公共交通,特别是城市轨道交通,不仅为人们的出行带来便利,也使我市空气质量有所改善.下列说法与改善空气质量关系最为密切的是(  )

A.拓宽马路,缓解城市交通拥堵的压力

B.抑制过快增长的私家车拥有量

C.提供市民乘公交车出行的便利

D.减少机动车燃油排放含氮、硫的氧化物的量

题型:单项选择题

以下临床表现最应诊断为上述哪种疾病?

49岁男性工人。平素血压23/15kPa(175/115mmHg)。头昏失眠,症状加重时血压28/17.5kPa(210/135mmHg)。尿中5-甲基-4-羟苦杏仁酸增高()

A.肾动脉狭窄

B.原发性醛固酮增多症

C.主动脉缩窄

D.嗜铬细胞瘤

E.皮质醇增多症

题型:单项选择题

法国前总统戴高乐在《战争回忆录》中说:“国家的活动有赖于煤炭、电力、煤气、石油,而且有一天要取决于原子核分裂……这就需要只有国家才能胜任的巨额费用和巨大工程,以及实行国有化。”这表明戴高乐主张

A.实行自由主义经济政策

B.以计划经济取代市场经济

C.废除私有制,实现国有化

D.实行国家垄断资本主义

题型:单项选择题

My grandparents were married for over half a century, and played their own special game the time they had met each other. The goal of their game was to write the word “shmily” in a surprise place for the other to find. They took turns leaving “shmily” around the house, and as soon as one of them discovered it, it was their turn to hide it once more. They dragged “shmily” with their fingers through the sugar and flour containers to await whoever was preparing the next meal. “Shmily” was written in the steam left on the mirror after a hot shower, where it would reappear bath after bath. There was no end to the places where “shmily” would pop up. Little notes with “shmily” were found on car seats, or taped to steering wheels. The notes were put inside shoes and left under pillows. “Shmily” was written in the dust upon the mantel(壁炉架)and traced in the ashes of the fireplace. This mysterious word was as much a part of my grandparents’ house as the furniture.

It took me a long time before I was able to fully appreciate my grandparents’ game. Skepticism has kept me from believing in true love --- one that is pure and enduring (持久的). However, I never doubted my grandparents’ relationship. It was based on passionate(热情的)affection which not everyone is lucky enough to experience.

But there was a dark cloud in my grandparents’ life: my grandmother had breast cancer. The disease had first appeared ten years earlier. As always, Grandpa was with her every step of the way. He comforted her in their yellow room, painted that way so that she could always be surrounded by sunshine, even when she was too sick to go outside. But my grandmother grew steadily weaker until, finally, she could not leave the house anymore. Then one day, what we all dreaded finally happened. Grandma was gone.

“Shmily.” It was written in yellow on the pink ribbons of my grandmother’s funeral bouquet (花束). As the crowd thinned and the last mourners turned to leave, Grandpa stepped up to my grandmother’s coffin and, taking a shaky breath, he began to sing to her. Through his tears and grief, the song came: S-h-m-i-l-y: See How Much I Love You.

小题1:According to the passage, where may the word “shmily” be found?

a.in the flour containers

b.on the mirror

c.on the sheet of toilet paper

d.on pillows

e.on the furniture

A.a, b

B.b, c

C.a, d

D.b, e小题2:The first paragraph is mainly about ________.

A.what the word “shmily” means

B.how the author’s grandparents played their special game

C.how the author appreciated her grandparents’ game

D.how the author’s grandparents cared for each other小题3:The underlined phrase “pop up” in Paragraph 1 means ________.

A.appear

B.change

C.survive

D.work小题4:According to the passage, the author _________.

A.thought the game was meaningless

B.believes everyone can experience true love

C.doubted the existence of true love at first

D.sometimes left “shmily” around the house小题5:Grandpa tried to make Grandma comfortable by _______.

A.singing songs to her every day

B.painting the room yellow

C.encouraging her to go outside

D.helping her take a hot shower every day

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