女，妊娠36周，无痛性阴道大量流血。B超：宫颈覆盖宫口，胎盘在宫底边缘，胎心156次/min，血压正常，下一步处理(    )

建筑高度达120m的综合楼，其避难层的地面面积为100m²。根据现行国家标准《建筑防烟排烟系统技术标准》（GB51251），下列关于该避难层防烟系统的说法，错误的是（    ）。

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?

在学业成败的归因中，内在的、可控的、不稳定的因素是()（易混）

女，65岁。因阵发性胸闷5年，持续胸痛6小时收入院。入院时血压为150/90mmHg，诊断为急性前壁心肌梗死。起病3周后，患者反复低热，左肺底有湿性啰音，心前区闻及心包摩擦音，此时应考虑并发（    ）。

2021年7月20日，我国时速600公里高速磁浮交通系统在_____成功下线，这是世界首套设计时速达600公里的高速磁浮交通系统，标志着我国掌握了高速磁浮成套技术和工程化能力。

提高咀嚼效率的主要因素是（  ）。

下列不属于银行理财师的职业道德要求的是（  ）。

我国口腔癌的一级预防应着重（  ）

上海期货交易所主要经营的产品是（  ）。

按金融产品的交易期限对金融市场进行分类，可分为（  ）。