张叔叔平均每分钟打72个字,有一篇文章有400个字,张叔叔用6分钟能打好这篇文章

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问题:

张叔叔平均每分钟打72个字,有一篇文章有400个字,张叔叔用6分钟能打好这篇文章吗?

考点:整数,小数,分数,百分数和比例的复合应用题
题型:解答题

Here is a science report.

Mahru-Z, a robot    小题1:    (develop) by the Korea Institute of Science and Technology can clean a home, put clothes in a washing machine and even heat food in a microwave. It took the institute two years to develop Mahru-Z,    小题2:   is 4.3 feet tall and is 121 pounds in weight. . The new robot has    小题3:   human-like body including a rotating head, arms, legs and hands    小题4:   six fingers. The most special feature of Mahru-Z is     小题5:   ability to observe objects, recognize tasks, and complete them.

Mahru-Z could also work with an earlier robot which is called Marhu-M. Marhu-M can move on wheels. Both Marhu-M and Mahru-Z can be  小题6:   (remote) controlled by a computer server.

You Bum-Jae, who was  scientist of the Korea Institute of Science and Technology,  小题7:   (claim) Mahru-Z as the most advanced robot in terms of copying human movements. Apart from doing the housework, it could also be used in the situations   小题8:   it is too difficult or dangerous for humans to accomplish the tasks.     小题9:    it will be a long time before this kind of robots is produced for commercial use .

The science institute spends about 3.5 million dollars every year     小题10:    robot research. It began receiving state funds for the project in 2006.

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对含油污水回注的优点叙述错误的是()。

A.污水中含表面活性剂,洗油效率高

B.污水的矿化度高,可防止油层水敏

C.污水由于含油,可以调整吸水剖面

D.污水回注防止污染环境,提高水的利用率

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=()。

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以下哪项描述与多形性腺瘤的临床表现不符()

A.可发生于任何年龄,以30~50岁多见

B.一般呈圆形或椭圆形不规则肿块

C.肿瘤质地硬,呈结节状

D.肿瘤生长缓慢,可伴有明显疼痛

E.多形性腺瘤较常发生于腮腺区

题型:解答题

导致中和pH值低的原因有()。

A、细氨水调节阀坏

B、氨水浓度偏高

C、pH计失真

D、粗氨水调节阀旁路漏

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