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【单选题】
Wise buying is a positive way in which you can make your money go further. The 1 you go about purchasing an article or a service can actually 2 your money or can add to the cost.Take the simple example of a hairdryer. If you are buying a hairdryer, you might 3 that you are making the best buy if you choose one whose look you like and which is also the cheapest 4 price. But when you get it home you may find that it 5 twice as long as a more expensive model to dry your hair. The cost of the electricity plus the cost of your time could well make your hairdryer the most expensive one of all. So what principles should you 6 when you go out shopping? If you keep your home, your car or any valuable possession in excellent condition, you'll be saving money in the long 7 . Before you buy a new appliance, talk to someone who owns one. If you can, use it or borrow it to check it suits your particular 8 . Before you buy an expensive 9 , or a service, do check the price and what is on offer. If possible, choose 10 three items or three estimates.
A.
function
B.
purpose
C.
goal
D.
task
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举一反三
【单选题】下列生理活动,主要通过负反馈控制实现的是
A.
排尿
B.
血液凝固
C.
分娩
D.
减压反射
【单选题】狮身人面像所表现的是以下哪个神话形象?()
A.
美杜莎
B.
赫拉克勒斯
C.
斯芬克斯
D.
俄狄浦斯
【单选题】狮身人面像所表现的神话形象是()。
A.
赫拉克勒斯
B.
斯芬克斯
C.
俄狄浦斯
D.
美杜莎
【判断题】逆压电效应是指将电能转化为机械能的现象
A.
正确
B.
错误
【判断题】正定矩阵一定可逆,且其逆矩阵和伴随矩阵一定都是正定矩阵。
A.
正确
B.
错误
【单选题】在 H.248协议中,al/of表示 ( )
A.
摘机
B.
挂机
C.
拍叉簧
D.
振铃
【简答题】移动商务环境构成要素包括____、使用环境、移动设备和浏览器、互联网接入、网站结构与内容。
【单选题】逆压电效应是将()转化为()。
A.
机械能,电能
B.
机械能,热能
C.
电能,机械能
D.
热能,机械能
【简答题】逆压电效应将 转化为 。
【简答题】正压电效应将 _____________ 转变为 _____________ ,逆压电效应将 _____________ 转化为 _____________ 。