不定项选择

乙型肝炎和丙型肝炎病毒会增加患肝癌的风险

A．错误
B．正确

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多项选择题

In the following assertions for descent direction, which ones are correct ? （） A. The descent direction is unique when the cost function is strictly convex. B. For a unconstrained optimization problem, an descent direction is also a feasible direction. C. If the angle between a vector and the gradient direction is greater than 90º，then this vector is a descent direction. D. The value of the cost function will decrease along a descent direction.

不定项选择

单体架构更多地作为应用的部署架构，单体应用只运行在一个进程中。

A．错误
B．正确