探头的维护和保养措施中，不正确的是

A．避免探头撞击、落地

B．用乙醇擦拭清洁探头

C．探头消毒时不可采用高温蒸煮

D．探头电缆线避免用力牵拉、扭曲

E．禁用液体石蜡做耦合剂

-_________do you go to school?

- I go to school____________.

A．What; by bike

B．How; by bike

C．How; ride a bike

D．Where; by a bike