下图是水的微观层次结构,图中右侧“○”表示 [ ] A.氢元素 B.氢原子 C.

题型:选择题

问题:

下图是水的微观层次结构,图中右侧“○”表示

[ ]

A.氢元素

B.氢原子

C.氧元素

D.氧原子

考点:水的组成
题型:选择题

图形是由________,__________,____________构成的.

题型:选择题

根据我国《海洋营运船舶明火作业安全技术要求》规定,进行进行舱内可燃气体浓度测量时,测试人员应记录()。

Ⅰ.时间;

Ⅱ.气温;

Ⅲ.气压;

Ⅳ.测量结果。

A.Ⅰ~Ⅲ

B.Ⅰ、Ⅲ、Ⅳ

C.Ⅰ~Ⅳ

D.Ⅰ、Ⅱ、Ⅳ

题型:选择题

Computers will become more advanced and they will also become easier to use.

Improved speed recognition will make the operation of a computer easier. Virtual reality(虚拟现实), the technology of() with a computer using all of the human senses, will also contribute to better human and computer(). Other, exotic (奇异的) models of computation are being developed, including biological computing that uses living organisms, molecular computing that uses molecules with particular(), and computing that uses DNA, the basic unit of heredity(遗传), to store data and carry out operations. These are examples of possible future computational platforms that, so far, are limited in abilities or are strictly() . Scientists investigate them because of the physical limitations of miniaturizing circuits embedded in silicon. There are also() related to heat generated by even the tiniest of transistors.

the technology will also contribute to better human and computer().

A.interfaces  

B.behavior

C.similarities  

D.comparison

题型:选择题

(四)


某消费者购买使用的一台洗衣机在天气湿热时不断出现故障直至无法使用,消费者向质量技术监督部门投诉后,经质检所检验证明该产品确有质量问题存在,质量技术监督部门决定对该产品的生产企业进行监督检查。

质量技术监督部门委托某质检所对成品进行一次全面完整的性能试验和相关的环境条件试验,这种试验通常称为( )。

A.出厂试验

B.过程检验

C.抽样检验

D.型式试验

题型:选择题

除月经紊乱外围绝经期综合征与雌激素下降有关症状的有哪些?

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