如图所示,把质量为m的石块从高h处以θ角斜向上方抛出,初速度为v0.不计空气阻力

题型:选择题

问题:

如图所示,把质量为m的石块从高h处以θ角斜向上方抛出,初速度为v0.不计空气阻力,石块落地时速度v的大小与下列哪些物理量有关(  )

①石块的质量②石块初速度的大小

③石块初速度的仰角④石块抛出时的高度.

A.②④

B.①②

C.①④

D.②③④

考点:动能定理
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秦始皇陵位于陕西省西安市以东35千米的临潼区境内,是秦始皇于公元前246年至公元前208年修建的,也是中国历史上第一个皇帝陵园。20世纪70年代中期长沙马王堆汉墓“女尸”的发现震惊中外,其尸骨保存之完好举世罕见。由此,有人推测秦始皇的遗体也会完好地保存下来。
对于下 * * 条陈述和以上推测的论证关系,哪项评价是正确的
Ⅰ.长沙马王堆汉墓的修建日期距秦代不足百年。
Ⅱ.秦始皇死于盛夏出巡途中,尸骨经长途颠簸运回咸阳,南死到下葬间隔近两个月。
Ⅲ.秦陵地宫“令匠作机弩矢,有所穿进者辄射之”,至今没有发现被盗痕迹。

A.Ⅰ支持,Ⅱ、Ⅲ质疑
B.Ⅰ支持,Ⅱ质疑,Ⅲ无关
C.Ⅰ、Ⅱ、Ⅲ均质疑
D.Ⅰ、Ⅱ、Ⅲ均支持

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阅读理解。

MARIO: Today is my sister's birthday. She is twenty-one years old.

TONY: That's great!

MARIO: She wants a cake for her birthday. Let's make one.

TONY: What? Can you make a cake?

MARIO: Sure. My sister likes chocolate cake, so I make one every year. She says they're great.

TONY: Well, OK. What do we need?

MARIO: We need some flour, some chocolate, and some sugar (糖). I have them right here.

           There's some butter and some eggs in the refrigerator (冰箱). But I don't have any milk.

TONY: Let's go and buy some milk and make a cake?

MARIO: Happy birthday, Ellen. Do you like your cake?

ELLEN: It's great, Mario. Thanks!

MARIO: You're welcome, Ellen. But there's one thing.

ELLEN: What's that?

MARIO: Well, every year I make a cake, and every year you eat all of it. I'd like some, too!

ELLEN: I'm so sorry! You can have a piece.

1. There is no __________ for the cake.

A. butter

B. sugar

C. milk

2. How many things do they need for making a cake?

A. 21.

B. 20.

C. 19.

3. How many things do they need for making a cake?

A. 5.

B. 6.

C. 7.

4. Can Mario have any cake this year?

A. Yes, he can have a lot.

B. Yes, but he can only have a piece.

C. No, his sister doesn't give him.

5. Is Ellen a good sister?

A. Yes, she says "Thanks" to Mario.

B. Yes, she likes the cake very much.

C. No, she doesn't give the cake to her brother before.

题型:选择题

每日使用胺碘酮的最大剂量为()。

A.1.0g

B.1.5g

C.2.0g

D.2.5g

E.3.0g

题型:选择题

小凡的爷爷因病去世,留下五万元的遗产,小凡的爸爸有个妹妹,已经成家。小凡的爷爷一直跟着小凡一家生活,小凡的姑姑时常到家里来探望老人,爷爷去世后,小凡的爸爸说小凡的姑姑已经出嫁,因此无权继承遗产。 请运用所学知识回答:小凡爸爸的观点对吗?为什么?

                                                                                                                                                             

                                                                                                                                                              

                                                                                                                                                              

                                                                                                                                                              

                                                                                                                                                              

题型:选择题

不可做为干燥剂的物质是()。

A.变色硅酸;

B.粒状无水氯化钙;

C.氯化钠;

D.浓硫酸。

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