蚕沙的功能及用途？

法律效力

下列区域中，近地面风所受摩擦力相对最小的是[ ]

A、海洋

B、山地

C、丘陵

D、高原

患儿，女，11个月，牛乳喂养，未加辅食，近2个月来食欲差，面色苍白，皮肤弹性差，精神不振，体重6.5kg，腹部皮下脂肪0.2cm。

判断该患儿的营养状况属于（）

A.营养过剩

B.正常

C.轻度营养不良

D.中度营养不良

E.重度营养不良

Companies that advertise on television complain that digital television recording (DTR) services make it possible for consumers to watch television programs without viewing the commercials that these advertisers have paid the television networks to broadcast. The DTR service providers respond that their services may actually help the advertisers, because without their service, many consumers would not have been able to watch the programs--or the commercials in them--in the first place.
Which of the following, if true, offers the most support to the advertisers’ claims that the DTR services are currently hurting their businesses ？（）

A. Even the best commercials are usually less entertaining than the programs that consumers choose to watch for themselves.

B. DTR services charge such high rates that only a small percentage of consumers subscribe to them.

C. The average per-second cost of advertising on television has risen every year for the past two decades.

D. More than 90 percent of subscribers to DTR services opt to use a setting that automatically edits out commercials.

E. DTR services alter the television viewing experience by allowing customers to view the program of their choice at the time of their choosing.

下列关于水管弯头中下返弯头画法正确的是（）。

A.A

B.B

C.C

D.D