一So you didn’t say “hello” to him last n

The number of people invited to the party       200 but a number of them         ___absent for different reasons.

A．were ; was

B．was ; were

C．was ; was

D．were ; were

You are old enough to      your own living.

A．win

B．gain

C．take

D．earn

数控车床加工中需要换刀时，程序中应设定（）点。

A.参考

B.机床原

C.刀位

D.换刀

航空活塞发动机加装增压器后，可明显改善发动机的（）

A.经济性；

B.高空性能；

C.抵抗爆震发生的能力

患者咳嗽痰多，痰质黏稠，色白易咯，胸闷，苔白腻，脉濡缓，宜诊为（）

A.风寒犯肺证

B.风寒表证

C.寒痰阻肺证

D.饮停胸胁证

E.风水相搏证