关于幼儿园环境创设，下列说法错误的是(    )。

某公共建筑内设直喷头1000只，根据现行国家标准《自动喷水灭火系统施工及验收规范》GB50261，对喷淋系统进行验收时，应对现场安装的喷头规格、安装间距分别进行抽查，分别抽查的喷头数量为（   ）。

证券公司应制订应急计划以确保在业务严重中断的情况下能够持续运营，并限制损失。（  ）

一天，陈老师正在组织孩子们踢球，方方总是抢球后抱着跑。陈老师看到后就让他站到一边，并对带班老师说：“以后都别让他踢球了！” 陈老师的做法 ( )。

中药处方对饮片的调配、煎法、用法等方面的特殊要求，常以脚注形式体现。下列用时不需捣碎的中药饮片有（ ）

假设检验中，P与α的关系是

请阅读  Passage 1,完成第  21~25小题 。

Passage 1

First two hours, now three hours-this ishow far in advance authorities are recommending people show up to catch adomestic flight, at least at some major U.S. airports with increasingly massivesecurity lines.

Americans are willing to toleratetime-consuming security procedures in return for increased safety. The crash ofEgyptAir Flight 804, which terrorists may have downed over the Mediterranean Sea,provides another tragic reminder of why. But demanding too much of airtravelers or providing too little security in return undermines public supportfor the process. And it should: Wasted time is a drag on Americans ' economicand private lives, not to mention infuriating.

Last year, the Transportation SecurityAdministration (TSA) found in a secret check that undercover investigators wereable to sneak weapons-both fake and real-past airport security nearly everytime they tried. Enhanced security measures since then, combined with a rise inairline travel due to the improving economy and low oil prices, have resultedin long waits at major airports such as Chicago ' s O ' Hare International. Itis not yet clear how much more effective airline security has become-but thelines are obvious.

Part of the issue is that the governmentdid not anticipate the steep increase in airline travel, so the TSA is nowrushing to get new screeners on the line. Part of the issue is that airportshave only so much room for screening lanes. Another factor may be that morepeople are trying to overpack their carry-on bags to avoid checked-baggagefees, though the airlines strongly dispute this.

There is one step the TSA could take thatwould not require remodeling airports or rushing to hire: Enroll more people inthe PreCheck program. PreCheck is supposed to be a win-win for travelers andthe TSA. Passengers who pass a background check are eligible to use expectedscreening lanes. This allows the TSA to focus. on travelers who are higherrisk, saving time for everyone involved. The TSA wants to enroll 25 millionpeople in PreCheck.

Ithas not gotten anywhere close to that, and one big reason is sticker shock:Passengers must pay $85 every five years to process their background checks.Since the beginning, this price tag has been PreCheck ' s fatal flaw. Upcomingreforms might bring the price to a more reasonable level. But Congress shouldlook into doing so directly, by helping to finance PreCheck enrollment or tocut costs in other ways.

Which of the following contributes to long waits at major airports?

如图3所示，三块平行放置的带电金属薄板A、B、C中央各有一小孔，小孔分别位于O、M、P点，由O点静止释放的电子恰好能运动到P点。现将C板向右平移到P，点，则由O点静止释放的电子(  )。

(    )指在最坏的发射条件时，全调制下主纵模的平均光功率与最显著边模的光功率之比。

商业银行开展理财业务，应当确保每只理财产品与所投资资产相对应，做到每只理财产品风险隔离，其中不包括（  ）。

肺癌最常见的转移部位是