急性冠脉综合症时最早升高的血清标志物是
A．CK-MBB．CK-BBC．肌红蛋白(Mb)D．LDHE．α-HBDH
参考答案：C
___ the words the boy said at the meeting were true. We must not believe ____ he said. Only a few of them are helpful to us.
A．None of; anything
B．All; nothing
C．Not all of; everything
D．Neither of; something
金属垫的厚度一般为（）
A.1.5mm～2.0mm
B.0.5mm～1.5mm
C.2.0mm～3.0mm
D.0.1mm～0.3mm
E.越厚越好
垫的厚度一般为（）