短文改错。When my daughter Kate and his frien

题型:改错题

问题:

短文改错。
When my daughter Kate and his friends wanted              
to make a wooden box and sell them, I was glad              
that they decided to earn money instead of ask their           
parents for it, so I agreed to lend them hand. I                
gave them many carpentry (木工的) lesson, and they              
all seemed capable (有能力的) and carefully with my          
tools. Because they worked behind a garage, the house         
is quieter than it used to be. They were learning how         
to use money in a usefully way, and I could               
tell that they felt be proud of themselves.                   
1. _____
2. _____
3. _____
4. _____
5. _____
6. _____
7. _____
8. _____
9. _____
10. _____
考点:物主代词可数名词及其单复数不定冠词定冠词人称代词
题型:改错题

轻症牙釉质发育不全的病理变化不包括

A.牙釉质厚度仅有正常釉质的1/3~1/4
B.牙面无实质性缺损
C.色白,不透明
D.可见釉面横纹明显
E.外源性色素渗入沉着而呈黄色或黄褐色

题型:改错题

价值表达功能

题型:改错题

故障率是指工作到t时刻尚未发生故障的产品,在该时刻后()时间内发生故障的概率。P168

A.一定

B.单位

C.相同

D.较短

题型:改错题

Bluetooth is a universal radio interface in the (1) frequency hand that enables portable electronic devices to connect and communicate wirelessly via short-range, ad hoc networks. Each unit can simultaneously communicate with up to (2) other units per piconet. Moreover, each unit can simultaneously (3) to several piconets. Eliminates the need for wires, cables and connectors for and between cordless or mobile phones, modems, headsets, PDAs, Computers, printers, projectors, local area networks, and so on, and paves the way for new and completely different devices and applications. Technology Characteristics (4) symbol rate exploits maximum available (5) bandwidth。

4()

A.1Mb/s

B.11Mb/s

C.54Mb/s

D.100Mb/s

题型:改错题

下列各种灯具中,属于热辐射光源的有( )。

A.白炽灯

B.卤钨灯

C.荧光灯

D.荧光高压水银灯

E.高压钠灯

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