______mother is a teacher and writer.A.Tom's and John'sB.Tom's and JohnC.Tom and John'sD.T
______mother is a teacher and writer.
A.Tom's and John's
B.Tom's and John
C.Tom and John's
D.Tom and John
______mother is a teacher and writer.
A.Tom's and John's
B.Tom's and John
C.Tom and John's
D.Tom and John
关于常规SE序列的扫描时间,正确的是
A、扫描时间=TE×NY×NEX
B、扫描时间=TR×NY×NEX
C、扫描时间=TE×TR×NEX
D、扫描时间=TE×TR×NY
E、扫描时间=(TR×NY×NEX)/ETL
自旋回波脉冲序列,质子密度加权像为
A、长TR、长TE所形成的图像
B、长TR、短TE所形成的图像
C、短TR、长TE所形成的图像
D、短TR、短TE所形成的图像
E、与TR、TE长短无关
标准集装箱计量用TE U(Tw e nty E quiv alent u nit)表示,1 TE u=1 个标准集装箱,相当于1个2 0英尺集装箱为换算单位;1个4 0英 尺集装箱=2个标准箱=2 TE U。()
A.TR、激励次数、层数以及相位编码方向的矩阵大小成正比
B.TR、激励次数、频率以及相位编码方向的矩阵大小成正比
C.TE、激励次数、层数以及相位编码方向的矩阵大小成正比
D.TE、激励次数、频率以及相位编码方向的矩阵大小成正比
E.TR、TE、激励次数、层数、频率编码方向的矩阵大小成正比
A.typing for her mother
B.had typed for her mother
C.typed for her mother
D.to type for her mother
引起动脉血流伪影的主要因素是
A、血流速度
B、TR、TE参数
C、血管管径
D、血管搏动
E、血液黏滞度
A.as does his mother
B.as his mother does
C.as did his mother
D.his mother as did
Your mother must be at home, ______she?
A.mustn't
B.doesn't
C.isn't
D.needn't