体育运动对大学生心理健康的影响具有提高心理素质宣泄情绪()、调节生活和实现自我价值的作用。
A. 增强社交能力
B. 解除疲劳和精神紧张
C. 完美人格个性
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E-MBMS采用的是基于3GPP无线接入网络的技术和标准;()、()和()等物理层过程都是沿用的3G技术。
()假说认为,语言学习存在最佳年龄或时期,如果错过这段时期,语言学习成功的可能性就会降低。
In preparing a cargo space for receipt of a shipment of bagged cargo,which instruction for laying dunnage should be followed? ()
A. Use either 1 or 2 tiers of dunnage,spacing the pieces in each tier a foot apart,and lay pieces in the bottom tier diagonally to the ship's side
B. Use 1 tier of dunnage,laying the pieces tightly together to form a solid floor over the steel deck
C. Use 2 tiers of dunnage,spacing the pieces in the bottom tier about a foot apart and the pieces in the top tier 6 inches apart
D. Use 2 tiers of dunnage,spacing the pieces in the bottom tier about a foot apart and the pieces in the top tier together
在库内或货堆周围安装紫外线光灯进行定期照射,对商品防霉腐有一定的效果,每次照射一般为()min
A. 5~10
B. 10~20
C. 20~50
D. 60~100