根据《长途光缆波分复用(WDM)传输系统工程验收规范》,设备发货之前,一般是由()组

题型:单项选择题

问题:

根据《长途光缆波分复用(WDM)传输系统工程验收规范》,设备发货之前,一般是由()组建厂验小组,,在设备供应商的工厂,对工程所采购的设备进行现场抽样检验。

A.建设单位

B.设计单位

C.施工单位

D.监理单位

考点:传输监理考试传输监理考试题库
题型:单项选择题

下列国家级风景名胜中,景区位于崇左市的是(  )

A.漓江

B.西山

C.花山

D.银滩

题型:单项选择题

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

I live in Japan, where electronic items are a way of life, so it is no surprise that many students carry these little electronic dictionaries. E-dictionaries may be lighter and compacter (简洁的) than any paper dictionary.  小题1:  However, to me, these are pretty much the limits to their advantages.

I think e-dictionaries should be limited in their use in classrooms. 小题2:

E-dictionaries are much more expensive. In Japan, they cost as little as 10,000 yen(US$100)much as 40,000 yen, depending on how many functions you want (or think you want) and depending on how fashionable you are. My trusty Random House paper dictionary is copyrighted at1995, cost me a mere US$12.95 plus tax.

E-dictionaries are more fragile. Drop your paper dictionary. Go ahead. Hold it above your head and drop it. 小题3:

E-dictionaries need batteries. Batteries are temperature sensitive. Batteries cost money, too.

E-dictionaries have keypads. Typing in the spelling of a word is harder and more time consuming than looking through pages and using the index at the top of each page.

小题4: Sound . Little devices beep (嘟嘟声) when you press the buttons, but it is very disturbing to some people in a classroom situation or library.

Finally, let’s consider making corrections or additions. No dictionary is perfect, paper version or electronic. However, when you find something you’d like to change in the e-dictionary, you can’t do anything about it. You can pencil in some notes with the paper type. Similarly, if you learn a word that isn’t in the dictionary, a few notes of a pencil make it easy to increase its memory capacity.  小题5:And, for those students whose habit is to mark certain words with a highlight pen for ease of future reference, again, the paper dictionary wins out.

A.But it is impossible to do so with a keypad model.

B.They may even contain more words and expressions.

C. Let me add a statement about one that really troubles me.

D.Now, try this with any lightweight plastic e-dictionary, and you’ll be picking up the pieces.E.That huge, heavy paper dictionary that you see in your library looks like a building block in size and weight.

F.E-dictionaries have advantages as well as disadvantages.

G.Let’s take a look at the following reasons.

题型:单项选择题

人体所需的元素从食物中摄取不足时,可通过食品添加剂和保健药剂来补充。如制成补钙、补锌的保健药剂或制成加碘食盐等,来增加对这些元素的摄入量。

(1)从上面提到的补钙剂、补锌剂和加碘食盐中的钙、锌、碘是指___________(填选项字母)。

A.单质 B.原子 C.离子 D.元素

(2)碳酸钙是一种价廉高效补钙剂,虽然碳酸钙难溶于水,但服用后可转化为可溶性钙盐被人体吸收,其中的道理是(用化学方程式表示)__________________________。

(3)碳酸钙的相对分子质量是__________,碳酸钙中的钙元素的质量分数是_______。

题型:单项选择题

以下关于局部排风罩的说法中不正确的是( )。

A.吹吸式排风罩在控制距离较大时有其优越性
B.接受式排风罩与外部吸气罩的根本区别在于罩外气流的成因
C.排风罩造成的控制风速随控制距离增加而迅速衰减
D.由于密闭罩将有害物质密闭于罩内故不需要排风

题型:单项选择题

由矿物的成分和内部构造所决定的颜色是()

A.假色

B.外色

C.本色

D.条痕色

E.表面色

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