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【单选题】
()是指能够独立存在的含一个或以上不电子的任何分离子
A.
由基
B.
指质
C.
D.
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【单选题】immersion
A.
放松
B.
拒绝
C.
浸入
【单选题】Virtual Reality Immersion includes the following aspects EXCEPT __________.
A.
the user feels present in the immediate physical environment rather than in the mediated environment
B.
it is a combination of a sense of immersion and interactivity
C.
the user can have a feeling of being inside and a part of that world
D.
an effective VR experience causes the user to become immersed in the virtual environment
【简答题】员工选拔的 是指选拔员工的稳定性程度。员工选拔的 是指员工选拔方法测量结果的有效性或者正确性。
【简答题】已知函数 在 处连续,求a,b的值
【单选题】Which of the following precautions must be taken if an electric immersion heater is used to keep the coolant in a diesel engine warm during the time the engine is secured?
A.
The coolant temperature must be maintained at 180℃
B.
The thermostatic bypass valves must be manually opened before the engine is started
C.
The pressure cap must be removed while the engine is secured
D.
Electrical power to the heater must be secured before the cooling system is drained
【单选题】患者,男,28岁,受凉后畏寒、发热、咳嗽、右侧胸痛5天。查体:急性病容,右侧呼吸运动减弱,语音震颤增强,右下肺可闻及支气管呼吸音及胸膜摩檫音。最可能诊断为
A.
右侧大叶性肺炎
B.
右侧支气管炎并胸腔积液
C.
右侧大叶性肺炎并胸膜炎
D.
右侧胸膜炎
E.
右侧肺结核
【单选题】An immersion suit should be equipped with a/an ______.
A.
air bottle for breathing
B.
whistle and hand held flare
C.
whistle,strobe light and reflective tape
D.
whistle,hand held flare and sea dye marker
【简答题】已知函数 ,在 x =1处连续. (I)求 a 的值; (II)求函数 的单调减区间; (III)若不等式 恒成立,求 c 的取值范围.
【单选题】From ________ the information concerning the tons per inch or centimeter immersion of a vessel shall be usually found.
A.
Stability Curve
B.
Deadweight Scale
C.
Table of Azimuth
D.
Freeboard Assignment
【简答题】(本小题14分) 已知函数 的图像在[a,b]上连续不断,定义: , ,其中 表示函数 在D上的最小值, 表示函数 在D上的最大值,若存在最小k,使得 对任意的 成立,则称函数 为 上的“k阶收缩函数” (1)若 ,试写出 , 的表达式; (2)已知函数 试判断 是否为[-1,4]上的“k阶收缩函数”, 如果是,求出对应的k,如果不是,请说明理由; 已知 ,函数 是[0,b]上的2阶收缩函数...
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