Most people who travel long distance
complain of jetlag. Jetlag makes business travelers less productive and more
prone (21) making mistakes. It is actually caused by
(22) of your "body clock" --a small cluster of brain cells
that controls the timing of biological (23) . The body clock
is designed for a (24) rhythm of daylight and darkness, so
that it is thrown out of balance when it (25) daylight and
darkness at the "wrong" times in a new time zone. The (26)
of jetlag often persist for days (27) the internal body
clock slowly adjusts to the new time zone. Now a new anti-jetlag syst A. in B. as C. at D. through [简答题]动车组出库质量联检中检修工长职责有哪些?
[判断题]履冰会增加接触线和承力索的电气负荷。().
A.正确 B.错误 [单选题]患者女,39岁,溃疡性结肠炎多年。患者因腹痛、腹泻明显,在社区就诊,应用过多M胆碱受体阻断药,可能引起下列并发症中的
A.机械性肠梗阻 B.结肠出血 C.中毒性结肠扩张 D.肠穿孔 E.肠瘘 [判断题]转向架使用弹簧的目的是减少冲击,减低振动。
A.正确 B.错误 [单选题]下列选项中()是从业人员的职业道德的内在要求。
A.依法行事 B.敬业奉献 C.严守秘密 D.服务社会 [判断题]依据华电《电力安全工作规程(热力和机械部分)》(2013年版),使用可燃物品(乙炔、氢气、油类、天然气、煤气等)时,工作人员必须掌握其特性及防火防爆规则。(1.0分)
A.正确 B.错误 [单项选择]速效救心丸的功能是()
A. 理气,宽胸,止痛 B. 行气活血,祛瘀止痛 C. 散瘀止血,消肿止痛 D. 芳香温通,益气强心 E. 益气和中,通络止痛 [单项选择]出入口控制采集装置或现场识读装置的识读响应时间应小于()
A. 1s B. 2s C. 3s D. 4s [判断题]17型车钩具有连锁和防跳功能。
A.正确 B.错误 我来回答: 提交
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