【单选题】The incorrect description of IBS is ______.
A.
the intelt IBS is still only a kind of navigation assistant equipment
B.
IBS which is suitable for 1 man bridge must have a dead man alarm
C.
the officers can rely on IBS completely
D.
ECDIS is vital for IBS
【单选题】液 - 固萃取的原理是()
A.
利用物质在两种不互溶的溶剂中的溶解度或分配比的不同来达到分离、提取或纯化的目的
B.
利用溶剂对样品中被提取物和杂质之间溶解度不同而达到分离提取的目的
C.
根据溶剂对固体有机物中的被提取物和杂质溶解度的不同且对被提取物的溶解度有较大的温度系数
【简答题】患儿3个月,消瘦,气短,因“肺炎”住院治疗,体检中心发现有心脏杂音,经X线、超声心动图等检查诊断为“室间隔缺损”。下列不符合室间隔缺损的说法是A、可闻及胸骨左缘3~4肋间收缩期杂音 B、杵状指 C、小型缺损能自然关闭 D、护理中应避免过度激动和剧烈哭闹 E、常发生心力衰竭 此类心脏病易并发下列哪种疾病,除外A、支气管肺炎 B、心力衰竭 C、亚急性细菌性心内膜炎 D、上呼吸道感染 E、脑血栓 该患儿...
【简答题】液 - 液萃取是利用 而达到分离 , 纯化物质的一种操作 .
【单选题】( 1-6 题共用题干) 患儿,女, 3 岁。生后即发现心脏有杂音,婴儿期喂养困难,易疲乏。经常咳嗽,每年冬天 患肺炎。查体:生长发育落后,心前区隆起,心界向左下扩大,心率 160 次 / 分,胸骨左缘第 3 ~ 4 肋间有IV级粗糙收缩期杂音, P 2 亢进。 现患儿因上感后诱发急性心力衰竭,按医嘱用西地兰,患儿出现恶心,呕吐,视力模糊。 4、此类心脏病 不易 合并下列哪种疾病
【简答题】A. vital B. alarm C. discipline D. ignore 7. There should be better ______ in schools. 8. We cannot _______ the problem. 9. Regular exercise is ______ for your health.
【单选题】The incorrect description of IBS is _____
A.
the intelt IBS is still only a kind of navigation assistant equipment
B.
IBS which is suitable for I man bridge must have a dead man alarm
C.
the officers can rely on IBS completely
D.
ECDIS is vital for IBS
【单选题】_____ are the black box of the marine industry, they continuously record vital information relating to the operation of the vessel such as speed, engine telegraph, GYRO Heading, images, etc.
B.
VDR(voyage data recorders)
C.
AIS (automatic identification systems)
【判断题】一个方案无论重复实施多少次,期近年值是不变的。