若线性方程组设n阶方阵A的各行元素之和均为零，且RA=n—1，则线性方程组Ax=...

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【简答题】

若线性方程组设n阶方阵A的各行元素之和均为零，且RA=n—1，则线性方程组Ax=0的通解为__________。设n阶方阵A的各行元素之和均为零，且RA=n—1，则线性方程组Ax=0的通解为__________。

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参考答案：

举一反三

【多选题】下列属于我国大型商业银行的是()。

中国工商银行

中国农业银行

中国银行

中国民生银行

中国建设银行

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【单选题】Which hormone stimulates its target cells to divide, increases their rate of protein synthesis, decreases their use of glucose and increases their use of fats?

cortisol

thyrocalcitonin

insulin

growth hormone

prolactin

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【判断题】Protein kinase A itself is different in different cell types, which explains why the effects of cyclic AMP vary depending on the target cell. ( )

正确

错误

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【单选题】A tumor was found in which altered expression of a miRNA led to uncontrolled cellular proliferation. If the target of this miRNA was the Myc protein, how best would this miRNA be characterized?

As an oncogene

As a dominant-negative effector

As a tumor suppressor

As a factor that upregulates its target

As a regulatory factor for an enzyme important in DNA repair

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【判断题】当事人及其法定代理人要求公安机关负责人、办案人员回避的，应当提出申请，并说明理由。( )

正确

错误

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【判断题】During gene editing by CRISPR/Cas9, the genes encoding the Cas9 protein and sgRNA are introduced into a cell where a targeted genomic change is planned. The sgRNA has a region complementary to the cho...

正确

错误

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【单选题】More than ______ of all drugs on the market target one G protein-coupled receptor (GPCR) or another.

1/3

1/4

1/5

1/6

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【多选题】当事人及其法定代理人要求公安机关负责人、办案人员回避的条件是（）。

应当提出申请

应当说明理由