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【单选题】

In a survey conducted by research firm Harris Interactive, 71% of Americans said that spending extra money on travel during the holiday season is worthwhile--so long as it affords them time with family and friends. But just because traveling may be the right thing to do, that doesn’t mean it has to be the expensive thing to do. Traveling involves many hidden costs that, once you’re aware of them, are easy to spot--and even easier to eliminate.
To start, consider transportation fees. For example, if you’re driving, fill up the gas tank before traveling on the highway, where it’s much costlier, says Clarky Davis, a personal finance expert. And make sure your car is in good condition by checking your heating vents, keeping up with routine maintenance and ensuring your tires are properly inflated, all of which help the ear achieve favorable fuel economy. Furthermore, not only does a tow car(救援车) cause inconvenience; it also means extra costs.
For those opting to fly, first, be aware of how much it costs to check a bag. Most airlines are charging for every checked bag by weight, but prices vary from carrier to carrier. If you can manage to pack everything into a carry-on, you’ll save at least $15. Brooke Ferencsik, a travel expert, suggests considering secondary airports when booking your flight. These airports often are less crowded and frequently offer cheaper tickets.
And when it comes to your actual destination, don’t assume that hotels are going to cut back on fees simply because they’re desperate to draw customers. "They won’t be adding or increasing fees, but they won’t be decreasing them either," says Ferencsik. The best defense against extra fees is to read about the hotel’s rates online, before you make a reservation. "Be aware of surcharges for everything from housekeeping to groundskeeping to use of the in-room safe," says Ferenesik. Some hotels even install a sensor(传感器) within the mini bar, charging guests for simply touching the items, let alone eating or drinking them.
"From airlines to hotels to rental ears, they’ve all got hidden fees you need to be aware of," says Ferencsik. "Do your homework and ask questions.\
It is advised that everything be packed into a carry-on most probably because a carry-on ______.

A.
is usually free of charge
B.
is more convenient than several checked bags
C.
is subject to safety guarantee
D.
is usually of a larger size than checked bags
题目标签:传感器
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【单选题】下列测力传感器中,属于发电型测力传感器的是()

A.
自感式传感器
B.
磁电感应式传感器
C.
电容式传感器
D.
应变式传感器

【多选题】传感器主要是由()组成。

A.
敏感元件
B.
转换元件
C.
转换电路
D.
辅助电源

【单选题】以下不是传感器特点的是()。

A.
接触检测
B.
反应速度快
C.
安装灵活
D.
可以在水中使用

【单选题】下面不是传感器节点的特点的是()?

A.
低成本
B.
低功耗
C.
有很强大的计算存储能力
D.
微型化和集成化

【单选题】卷绕机B65传感器是()。

A.
底部切换装置
B.
生头装置初次生头
C.
缠丝监测器
D.
转盘脉动

【单选题】N1传感器位于()

A.
第一级低压涡轮和高压涡轮之间
B.
低压转子轴的后端
C.
转换齿轮箱中
D.
启动发电机安装座附近

【多选题】传感器按测量原理分类,主要有()。

A.
物理原理
B.
生物原理
C.
化学原理
D.
数字技术原理