Which of the following statement is NOT the concern
about Artificial Intelligence（）Which of the following statement is NOT the concern
about Artificial Intelligence（）
A. It will become too smart.
B. It will be out of control
C. It will occupy
D. the ecological niche of human beings.
E. D．It will become
F. the best chess player
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Has elasticity theory found its applications in which of the following engineering areas（）
A. Civil engineering
B. Mechanical engineering
C. Aeronautical and aerospace engineering
D. Materials science and engineering
In spherical coordinates, unit vectors are functions of which of the following coordinate variables（）
A. Spherical radial （R）
B. Spherical longitudinal coordinate （φ）
C. Spherical latitudinal coordinate （θ）
D. All
In cylindrical coordinates, the radial and angular unit vectors are dependent on which of the following coordinate variable（）
A. Radial coordinate （r）
B. Angular coordinate （θ）
C. Vertical coordinate （z）
D. None
下列种名书写正确的是（）
A. Lycium barbarum L
B. Panax ginseng C. A. Meyer
Cordyceps Sinensis （Berkeley） Saccardo
Dimocarpus longan Lour
E. Hippophae rhamnoides L. subsp. sinensis Rousi
F. Hippophae rhamnoides L. subsp. sinensis Rousi
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