建筑基桩采用低应变法或声波透射法检测,受检桩混凝土强度至少达到设计强度的(),且不小于15MPa。()
A.65%
B.70%
C.80%
D.85%
参考答案:B
进行性多灶性白质脑病的病原体是()
A.单纯疱疹病毒
B. * * 多瘤空泡病毒
C.肠道病毒
D.带状疱疹病毒
E.柯萨奇病毒
— Is it my age ______the boss minds?
—I’m afraid so. He will consider ______ necessary to have an experienced assistant.
A.which;it
B.that;it
C.which;that
D.that;that