如图所示,固定在小车上支架的斜杆与竖直杆的夹角为θ,在斜杆下端固定有质量为m的小

题型:选择题

问题:

如图所示,固定在小车上支架的斜杆与竖直杆的夹角为θ,在斜杆下端固定有质量为m的小球,小车静止,下列关于杆对球的弹力的判断中,正确的是(  )

A.大小为mg,方向沿杆向上

B.大小为mg,方向垂直杆向上

C.大小为mg,方向竖直向上

D.以上说法都不对

考点:弹力的产生、方向和种类弹力的大小、胡克定律
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关于血行摇散型肺结核,下列错误的是 ()

A.多由原发型肺结核发展而来

B.患者免疫力下降时易发病

C.大量结核菌在较短时间内多次侵入血循环

D.结核菌进入肺间质、侵入肺实质后形成粟粒大小的结节

E.急性血行播散型肺结核多见于老年人,儿童和青少年少见

题型:选择题

单代号网络计划时间参数首先应计算( )。

A.工作总时差

B.工作自由时差

C.相邻两项工作之间的间隔时间

D.最早开始时间和最早完成时间

题型:选择题

下列各项,不属于至宝丹临床表现的是()。

A.烦躁

B.谵语

C.身热

D.舌绛

E.痉厥

题型:选择题

33 Chilean miners were trapped nearly a half-mile underground after the mine accident. They had no real hope that they’d ever be found. Luckily, though, the men had Luis Urzua. They were rescued to safety on October 13, 2010.Urzua, 54, was the shift leader at the time of the disaster, and used all his wisdoms and his leadership talents to help his men stay calm and in control for the 17 terrible days it took for rescuers to make their first contact with them.

It was no surprise that Urzua was the last of the 33 miners to leave the mine.

Urzua --- after shaking hands with rescue workers ---- climbed into a capsule barely wider than a man’s shoulders at 9:46 and was hauled up (拖上来) from a narrow hole drilled through 2,000 feet of rock. He arrived at the top 11 minutes later.

“We have done what the entire world was waiting for,” he told Chilean President Sebastian Pinera immediately after his rescue. “The 69 days that we fought so hard were not in vain.” Pinera greeted Urzua, saying “You have been rescued, coming out last like a good leader… You have no idea how all Chileans share with

you your hardships, your hope, and your joy. You are an inspiration.” With Urzua by his side, the president led the crowd in singing the national anthem.Robinson Marquez once worked with Urzua in a nearby mine. He described Urzua as a calm, professional person and a born leader. “He is very protective of his men and obviously loves them. He wouldn’t have left until all of his men were safely above ground,” Marquez said.

Under Urzua’s leadership, the men stretched an emergency food supply meant to last just 48 hours over two and a half weeks, taking tiny sips of milk and bites of fish every other day.He described the difficulties of the first days, saying that it took about three hours for the dust to settle before the men could inspect where tons of collapsed rock sealed off (堵住) the main way out. When the rescuers first made contact by drilling a narrow hole into their refuge (避难处), the miners were so excited that everyone wanted to hug the drill hammer.After the collapse, Urzua was the first to speak to Pinera and to urge him not to let him and his men down. “Don’t leave us alone,” he asked the president, who assured the workers that they would not be abandoned, telling them he would do everything he could to get them back to the surface.

小题1:The mine collapsed on ____.

A.March 2

B.June 3

C.August 5

D.October 13小题2:Which word can’t be used to describe Urzua?

A.Selfish

B.Calm

C.Optimistic

D.Talented小题3:What do you know about the capsule?

A.It is very spacious.

B.It is very narrow.

C.It is made by Urzua.

D.It is used in space.小题4:The emergency food supply was designed to last ____.

A.over two and a half weeks

B.five days

C.one week

D.two days

题型:选择题

男婴10个月,人工喂养(为羊乳6个月后加米糊但未加肉类);面色苍白3个月,近一周嗜睡,食欲差;体检虚胖、头发稀疏微黄,面色苍黄,巩膜轻度黄染,心尖SMⅡ,肝肋下0.5cm,脾未触及。

最佳治疗是()

A.口服二价铁

B.口服三价铁

C.注射铁剂

D.注射叶酸

E.注射维生素B12

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