验算桩端持力层下软弱下卧层承载力时，下述()不正确。
A. 当sa/d≤6时应按群桩基础验算，否则按单桩验算；
B. 按群桩验算时，附加应力作用的面积近似取承台底面积；
C. 计算附加应力时，应考虑桩侧阻力的影响；
D. 应力扩散角应综合考虑持力层的相对厚度及持力层与软弱下卧层的模量等确定。
A temporary memory won't become an enduring one unless______.
A. it reaches the hippocampus
B. it is captured during sleep time
C. it is transferred to the neocortex
D. it eliminates the memory under it
A．To illustrate the importance of the speaker's research.B．To tell the difference of "
A. To illustrate the importance of the speaker's research.
B. To tell the difference of "self-respect" and "self-esteem".
C. To persuade people not to be concerned with "self-esteem".
D. To explain why some people are more prone to guilt and stress.
【C20】
A. manifest
B. provoke
C. articulate
D. anticipate
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