具有浮大搏指、弦急中空特点的脉是
A．牢脉
B．革脉
C．芤脉
D．伏脉
E．紧脉
参考答案：B
Windows NT属于C2安全级，这里的C2级是( )标准中定义的。
A．ITSEC
B．TCSEC
C．ISO
D．IEEE
He never________to help those in trouble because he was a kindhearted man.[ ]
A. handled
B. hurried
C. hesitated
D. determined
