更多“胸部扫描，受检者确实屏气困难，最好的措施是”相关的问题
根据《系统频率允许偏差》规定，表述正确的是（）
A．容量在3000MW以上的电网，频率偏差不超过50±0.2HzB．容量在3000MW以下的电网，频率偏差不超过50±0.2HzC．容量在3000MW以上的电网，频率偏差不超过50±0.5HzD．容量在3000MW以下的电网，频率偏差不超过50±0.5Hz
B．容量在3000MW以下的电网，频率偏差不超过50±0.2HzC．容量在3000MW以上的电网，频率偏差不超过50±0.5HzD．容量在3000MW以下的电网，频率偏差不超过50±0.5Hz
C．容量在3000MW以上的电网，频率偏差不超过50±0.5HzD．容量在3000MW以下的电网，频率偏差不超过50±0.5Hz
D．容量在3000MW以下的电网，频率偏差不超过50±0.5Hz
点击查看答案
ABC公司是一个有较多未分配利润的工业企业。下面是上年度发生的几笔经济业务，在这些业务发生前后，速动资产都超过了流动负债。请回答下列问题：赊购材料将会()。
A.降低速动比率
B.增加速动比率
C.降低流动比率
D.增加流动比率
点击查看答案
办理涉外行政案件，应当使用中华人民共和国通用的语言文字。
点击查看答案
苯分子中含有共轭键，遇溴水的现象是（）
A.溴水褪色
B.有白色沉淀生成
C.不褪色
D.变蓝
点击查看答案
闸阀、水封、冷却塔等，安装前应进行严密性试验，试验压力为计算压力的（）倍。
A.1.5 B.2.0 C.2.5 D.3.0
点击查看答案
经商标局核准注册的商标为注册商标。包括（）
A.商品商标 B.服务商标 C.集体商标 D.证明商标
点击查看答案
对相同温度下无限稀释的硫酸、盐酸和硝酸中的氢离子而言,下列说法不正确的是()
A:摩尔电导率均相同
B:离子迁移率均相同
C:迁移数均相同
D:迁移数不同
点击查看答案
将自产、委托加工或购买的货物分配给股东或投资者，或无偿赠送他人视同销售货物的行为。()
点击查看答案
诱发食管下段和胃底静脉曲张破裂出血的最主要因素是
A. 精神紧张和忧虑B. 粗糙食物C. 咳嗽D. 便秘E. 腹水回输
点击查看答案
广布于陆地表面的土壤层是成土作用和风化作用彼此平衡所形成的产物。以元素富集、松散的颗粒物质聚集作用为主导的成土过程是与风化、侵蚀作用相对立的过程，它延长了风化物质在陆地表面滞留的时间，增强了地表抗侵蚀的强度。（）
点击查看答案
Passage Four A few years ago, in their search for ways to sell more goods, advertising men hit on a new and controversial gimmick. It is a silent, invisible commercial that, the ad men claim, can be rushed past the consumer’s conscious mind and planted in his subconscious—and without the consumer’s knowledge. Developed by James Vicary, a research man who studies what makes people buy, this technique relies on the psychological principle of subliminal perception. Scientists tell us that many of the sights coming to our eyes are not consciously "seen". We select only a few for conscious "seeing" and ignore the rest. Actually, the discarded impressions are recorded in the brain though they are below the threshold of consciousness. There’s little doubt in Vicary’s mind as to the subliminal ad’s effectiveness. His proof can be summed up in just two words: sales increase. In an unidentified movie house not so long ago, unknown audiences saw a curious film program. At the same time, on the same screen on which the film hero was courting the heroine a subliminal projector was flashing its visible commercials. "Get popcorn," ordered the commercial for a reported one three-thousands of a second every five seconds. It announced "Coca-Cola" at the same speed and frequency to other audiences. At the end of a six weeks trial, popcorn sales had gone up 57 percent, Coke sales 18 percent. Experimental Films. Inc, says the technique is not new. It began research on subliminal perception in 1954. Experimental Films stresses that its equipment was designed for helping problematic students and treating the mentally ill. At NYU two doctors showed twenty women the projected image of an expressionless face. They told the subjects to watch the face for some change of expression. Then they flashed the word angry on the screen at subliminal speeds. Now the women thought the face looked unpleasant. When the word happy was flashed on the screen instead, the subjects thought the woman’s facial expression looked much more pleasant. Subliminal techniques, its promoters believe, are good for more than selling popcorn. Perhaps the process can even be used to sell political candidates, by leaving a favorable impression of the candidate in the minds of the electorates subliminally. How convincing are these invisible commercials Skeptical psychologists answer that they aren’t anywhere near as effective as the ad men would like to think they are. Nothing has been proven yet scientifically, says a prominent research man.
A．promoting salesB．making commercialsC．curing mental illnessD．selling political candidates
点击查看答案
为什么黄土沉积层中有黄色的黄土层与红色或浅红色的古土壤层，它们所指示的古气候意义是什么？
点击查看答案
关于电流跟电阻的关系，下面说法中正确的是（）。
A.电流跟电阻成反比 B.在电压不变的情况下，导体中的电流跟导体的电阻成反比 C.通过导体的电流跟导体的电阻成反比 D.在电压不变的情况下，导体的电阻跟导体中的电流成反比
点击查看答案
下列产品中 , 属于在零售环节征收消费税的金银首饰有 () prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A. 金基合金首饰 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace> B. 包金首饰 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace> C. 银基合金首饰 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace> D. 金银首饰与非金银首饰组成的成套首饰 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
点击查看答案
题目内容
（请给出正确答案）
参考答案
十点题库官方参考答案
（由十点题库聘请的专业题库老师提供的解答）
