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【简答题】
设A是m×n矩阵,Ax=0,只有零解,则r(A)=________
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举一反三
【多选题】关于多巴胺的叙述，错误的是
A.
易透过血一脑脊液屏障，中枢作用明显
B.
治疗量能使肾血管舒张，改善肾功能
C.
对心脏β1受体作用强，易引起心律失常
D.
可激动α、β1受体，也可激动外周多巴胺受体
E.
适用于伴有心肌收缩力减弱、尿量减少而血容量已补足的休克
【多选题】下列关于高温烘烤干燥的说法中,不正确的有{.XZ}。
A.
所有涂料都可以进行高温烘烤干燥
B.
高温烘烤干燥型涂料的涂膜性能比自然干燥型涂料差
C.
沥青烘漆需高温烘烤才可干燥成膜
D.
酚醛磁漆需高温烘烤才可干燥成膜
E.
高温烘烤干燥所需的温度一般在60~80℃
【简答题】Section B Task One: Focusing on the Main Ideas ▇ Choose the best answer to complete each of the following sentences according to the information contained in the listening passage.
【单选题】当风速达到__________以上或浪高达到__________以上,预计仍将持续增大时应停止装卸油作业 (41738:第十一章_液体散货运输:2167)
A.
6级;1米
B.
6级;1.5米
C.
7级;1.0米
D.
7级;1.5米
【单选题】[音频] Task One: Focusing on the Main Ideas ▇Choose the best answer to complete each of the following sentences according to the information contained in the listening passage. 1 The main idea of this p...
A.
how to boil some carrots, eggs and coffee beans in water
B.
that we should make better use of carrots, eggs and coffee beans
C.
that daughters should learn how to cook
D.
how to deal with adversity in life
【多选题】关于多巴胺的叙述,错误的是
A.
易透过血脑脊液屏障，中枢作用明显
B.
治疗量能使肾血管舒张，改善肾功能
C.
对心脏β1受体作用强，易引起心律失常
D.
可激动α、β1受体，也可激动外周多巴胺受体
E.
适用于伴有心肌收缩力减弱、尿量减少而血容量已补足的休克
【简答题】简述人力资源招聘的原则
【单选题】Task One: Focusing on the Main Ideas Choose the best answer to complete each of the following sentences according to the information contained in the listening passage. 1) According to the speaker, ha...
A.
is not easily obtained by poor people
B.
is what movie stars are most eager to obtain
C.
does not naturally follow wealth or success
D.
necessarily results from wealth or success
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