有关脂肪瘤的MRI表现,错误的是()
A.T1WI为高信号
B.T2WI信号强度高于肌肉
C.STIR序列为高信号
D.MRI表现具有特异性
E.病变周围边界清晰
参考答案:C
关于网状配筋砖砌体,下列论述不正确的是()。
A.网状配筋砖砌体开裂荷载,一般为破坏荷载的60%~75%
B.网状配筋砖砌体的破坏特点是形成贯通的竖向裂缝
C.网状配筋砖砌体当配筋量增加到一定程度,砌体强度接近于单砖抗压强度
D.网状配筋砖砌体的极限压缩变形可为相应的无筋砌体的2~3倍
Rule 14 describes the action to be taken by vessel meeting head-on. Which of the following conditions must exist in order for this rule to apply?().
A.Both vessels must be power-driven
B.They must be meeting on reciprocal or nearly reciprocal courses
C.The situation must involve risk of collision
D.All of the above