可退式打捞矛是依靠()打捞管柱。A、圆卡瓦产生径向力咬住落鱼 B、芯轴带动圆卡瓦造扣

题型:单项选择题

问题:

可退式打捞矛是依靠()打捞管柱。

A、圆卡瓦产生径向力咬住落鱼

B、芯轴带动圆卡瓦造扣

C、芯轴与圆卡瓦的轴向拉力

D、圆卡瓦轴向拉力

考点:中西医结合执业医师高级井下作业工高级井下作业工题库
题型:单项选择题

阅读理解,判断正(T)误(F)。

    I remember when I was younger, my family lived a simple life. We weren't wealthy by any stretch

of the imagination, but we were satisfied with what we had.

    Our first transportation was an old broken-down bicycle. It provided us with transportation on

many enjoyable weekends and holidays. Mom sat on the back while Dad rode. I only a kid at that time,

was on the bar in front of him. It didn't matter where we were going as long as we were going there

together.

    Not long after that, my family moved to Hainan. Depending on my parents' courage and persistence

(坚持不懈), they started their own business. As a result, we soon owned a new car instead of the bike.

So we could travel farther on our tour. Our family's happy laughter filled the car as we traveled to many

farther places in China.Many years have passed since those happy days, but we are still as close as ever.

    Recently, the airplane has become our fashion of transportation as we travel around the world. We

are able to experience the sights of Amsterdam, the romance(浪漫) of Paris, and the elegance (典雅)

of Vienna. But yet, such fantastic places are nothing compared to the love of our family.

    Time goes by, and everything is changing all the time. Yet the love in my family always remains. It

is the source of our happiness, confidence,courage,and faith(信任). But it goes so much deeper than

that; it warms our hearts. So I will praise the love in my family and let it go on forever!

( )1. When the writer was a child, his family was very rich.

( )2. Their first transportation was a new bicycle.

( )3. In Hainan, they bought a new car.

( )4. The family visited many places of interest.

( )5. Time goes by, they don't feel happy again.

题型:单项选择题

术后并发肺不张和肺炎的病人易发生()

A.代谢性酸中毒

B.代谢性碱中毒

C.呼吸性酸中毒

D.呼吸性碱中毒

E.高钾血症

题型:单项选择题

风险管理的过程不包括()。

A.选择风险管理技术

B.评估风险管理效果

C.风险评价

D.风险选择

题型:单项选择题

下列选项中说法正确的是 [ ]

A.在20 ℃时的一个氧气分子的动能为Ek ,当温度升高到30 ℃时,这个分子的动能为Ek’,则Ek’< Ek    

B.在20 ℃时,一个氧气分子的速率为v ,一个氢气分子的速率为u ,则v<u    

C.在20 ℃时,每一个氧气分子都是20 ℃    

D.在任何温度下,各种气体分子的平均速度都相同

题型:单项选择题

我国古代科学技术注重实际运用,具有以下特点()

A.包容性和超前性

B.持久性和继承性

C.民族性和稳定性

D.实用性和整体性

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