颈部海绵状血管瘤婴儿期常为(),幼儿时则向()及()过渡,成人均为(),由多数()构成。
参考答案:毛细血管型血管瘤;微静脉型;海绵型;海绵状血管瘤;海绵状血窦
Not only_______know the theory, but also_______learn how to apply it in practice.
A.should we; should we
B.we should; we should
C.should we; we should
D.we should; should we
充电时,充电工必须经常巡视并随时调整电压,使充电电压始终保持在()±01伏。
A、30
B、40
C、50
D、60