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【单选题】
根据五行、五脏、五季养生规律,春季应多补:
A.
B.
C.
D.
E.
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【简答题】A.He can't sleep at night. B.He can't find a quiet place to study. C.He can't narrow down his research topic. D.He can't find enough information for his research paper.
【多选题】在以下哪些情况下需要对制动系统排空( ) 。
A.
更换管路
B.
更换制动主缸
C.
更换摩擦片
D.
更换车轮制动器
【简答题】昆虫的口器分为哪些类型 2、刺吸式口器的特点有哪些? 3、锉吸式口器式哪一类昆虫所特有的? 4、昆虫的胸部由 个体节组成,由前向后依次为 、 和 。
【判断题】当RLC串联电路发生谐振时,电路中的电流将达到其最大值。串联谐振阻抗最小电流最大,并联谐振相反
A.
正确
B.
错误
【多选题】哪些情况下需要更换制动液
A.
到达规定期限
B.
含水量超过2%
C.
含水量超过4%
D.
每次更换制动摩擦片时
【单选题】In a narrow channel or fairway when overtaking can take place only if the vessel to be over-taken has to take action to permit safe passing, the vessel intending to overtake shall indicate her intenti...
A.
the vessel to be overtaken shall sound appropriate signal first
B.
the overtaking vessel shall sound appropriate signal first
C.
the overtaking vessel shall take action to permit safe passing
D.
the vessel to be overtaken shall take action to permit safe passing before hearing appropriate signal
【单选题】The site is fairly near the city center, ___ it can only be reached by a series of narrow streets
A.
22.The site is fairly near the city center, ___ it can only be reached by a series of narrow streets. A.and
B.
but
C.
or
D.
So
【简答题】昆虫胸部由()、()、()3个体节组成。每1胸节着生()分节的足,依次为()、()、()。
【判断题】应用库仑分析法对为物质进行分析时,要求电极反应的电流效率为100%
A.
正确
B.
错误
【单选题】当RLC串联电路发生谐振时,改变电阻R的值,则()。
A.
电感中的电流发生变化
B.
电容端电压无变化
C.
电源提供的无功功率发生变化
D.
谐振消失
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