下列诗句中不涉及化学变化的是 A.爆竹声中一岁除,春风送暖人屠苏 B.只要工夫深

题型:选择题

问题:

下列诗句中不涉及化学变化的是

A.爆竹声中一岁除,春风送暖人屠苏

B.只要工夫深,铁杵磨成针

C.千锤万凿出深山,烈火焚身若等闲

D.野火烧不尽,春风吹又生

考点:物理变化和化学变化的特征和判别物理性质和化学性质的区别和应用氨气的性质二氧化硫的性质
题型:选择题

液压系统采用变量泵供油,通过改变泵的排量来改变输入执行元件的流量实现调速的回路称为容积调速回路。

题型:选择题

建筑物的经济寿命是指建筑物从( )起到它对物业价值不再有贡献时止的时间。

A.建成之日

B.验收之日

C.竣工验收合格之日

D.规划之日

题型:选择题

下列关于网络安全服务的叙述中,哪一个是错误的

A.应提供访问控制服务以防止用户否认已接收的信息

B.应提供认证服务以保证用户身份的真实性

C.应提供数据完整性服务以防止信息在传输过程中被删除

D.应提供保密性服务以防止传输的数据被截获或篡改

题型:选择题

在形状公差中,符号“//”表示()。

A.直线度

B.圆度

C.倾斜度

D.平行度

题型:选择题

Although interior design has existed since the beginning of architecture, its development into a specialized field is really quite recent. Interior designers have become important partly because of the many functions that might be (51) in a single large building.

The importance of interior design becomes (52) when we realize how much time we (53) surrounded by four walls. Whenever we need to be indoors, we want our surroundings to be (54) attractive and comfortable as possible. We also expect (55) place to be appropriate to its use. You would be (56) if the inside of your bedroom were suddenly changed to look (57) the inside of a restaurant. And you wouldn’t feel (58) in a business office that has the appearance of a school.

It soon becomes clear that the interior designer’s most important basic (59) is the function of the particular (60) .

52().

A.obscure 

B.attractive 

C.appropriate 

D.evident

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