穿在管内绝缘导线的额定电压不应低于500V。按标准,黄、绿、红色分别为A、B、C三相

题型:判断题

问题:

穿在管内绝缘导线的额定电压不应低于500V。按标准,黄、绿、红色分别为A、B、C三相色标,黑色线为零线,黄绿相间混合线为接地线。( )

考点:施工员电气施工员电气配管配线安装工程
题型:判断题

纵隔偏向健侧的疾病不包括()。

A.血胸

B.开放性气胸

C.张力性气胸

D.慢性脓胸

E.急性脓胸

题型:判断题

Sports shoes that work out whether their owner has done enough exercise to warrant time in front of the television have been devised in the UK.

The shoes — named Square Eyes — contain an electronic pressure sensor and a tiny computer chip to record how many steps the wearer has taken in a day. A wireless transmitter(传话器) passes the information to a receiver connected to a television, and this decides how much evening viewing time the wearer deserves, based on the day’s efforts.

The design was inspired by a desire to fight against the rapidly ballooning waistlines among British teenagers, says Gillian Swan, who developed Square Eyes as a final year design project at Brunel University to London, UK. “We looked at current issues and childhood overweight really stood out,” she says. “And I wanted to tackle that with my design.”

Once a child has used up their daily allowance gained through exercise, the television automatically switches off. And further time in front of the TV can only be earned through more steps.

Swan calculated how exercise should translate to television time using the recommended daily amounts of both. Health experts suggest that a child take 12,000 steps each day and watch no more than two hours of television. So, every 100 steps recorded by the Square Eyes shoes equals precisely one minute of TV time.

Existing pedometers (计步器) normally clip onto a belt or slip into a pocket and keep count of steps by measuring sudden movement. Swan says these can be easily tricked into recording steps through shaking. But her shoe has been built to be harder for lazy teenagers to cheat. “It is possible, but it would be a lot of effort,” she says. “That was one of my main design considerations.”

小题1:According to Swan, the purpose of her design project is to ________.

A.keep a record of the steps of the wearer

B.deal with overweight among teenagers

C.enable children to resist the temptation of TV

D.prevent children from being tricked by TV programs小题2:Which of the following is true of Square Eyes shoes?

A.They regulate a child’s evening TV viewing time.

B.They determine a child’s daily pocket money.

C.They have raised the hot issue of overweight.

D.They contain information of the receiver.小题3:What is stressed(强调)by health experts in their suggestion?

A.The exact number of steps to be taken.

B.The precise number of hours spent on TV.

C.The proper amount of daily exercise and TV time.

D.The way of changing steps into TV watching time.小题4:Compared with other similar products, the new design ________.

A.makes it difficult for lazy teenagers to cheat

B.counts the wearer’s steps through shaking

C.records the sudden movement of the wearer

D.sends teenagers’ health data to the receiver小题5:Which of the following would be the best title for the text?

A.Smart Shoes Decide on Television Time

B.Smart Shoes Guarantee More Exercise

C.Smart Shoes Measure Time of Exercise

D.Smart Shoes Stop Childhood Overweight

题型:判断题

卫生资源使用的医德要求是:反对浪费,限制增长,(),提高效益。

题型:判断题

2004年,新疆发电装机容量达到552万千瓦,建成了以乌鲁木齐为中心,东到哈密、西到克拉玛依、南到库车、北到()的22万伏主力电网。

题型:判断题

BTS3900中()单板提供BTS与BSC之间的E1接口。

A.DRFU、DELP

B.DFLP、DCDU

C.UEIU、GTMU

D.GTMU、UELP

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