【简答题】视距测量误差的主要来源有大气竖直折光的影响距丝的()、()。
【简答题】测量误差的主要来源有( )误差、( )误差、理论误差和方法误差、( )误差四种。
【简答题】男,51岁。毕氏Ⅱ式胃大部切除手术后第6天,突发右上腹剧痛,伴有严重腹膜刺激征。护士应考虑其并发了A、碱性反流性胃炎 B、输入襻梗阻 C、胃排空障碍 D、低血糖综合征 E、十二指肠残端破裂 应立即采取的措施是A、病人绝对卧床休息 B、禁食,胃肠减压 C、立即手术 D、镇静、止痛 E、使用抗生素
【单选题】患者,男性,55岁。毕Ⅱ式胃大部切除术后第1天,突发剑突下剧痛。查体:腹肌紧张,全腹压痛、反跳痛,剑突下最明显。若该病人在术后第6天出现上述临床表现,以下治疗方法最恰当的是()
【单选题】It can be inferred from the passage that______.
A.
people can improve their sleeping if they sleep more hours than usual
B.
in order to sleep more soundly at night, people can take a nap at noon
C.
the nine-step treatment for insomniacs was developed by Arthur Spielman
D.
approximately 15 percent of the people are suffering insomnia
【单选题】It is clear that your ____ English will greatly improve if you can practice ____ wherever you can.
【单选题】Biotech can improve productivity, which can be proved by trials of______.
A.
pest-resistant cotton in Africa
B.
the European corn borer
C.
the genetically modified rice
D.
vitamin A much more converted
【简答题】水准测量中误差的主要来源有仪器误差、观测误差、()。