We will ________ in Beijing for a week.[ ]
A. am
B. is
C. be
D. are
答案:C
小儿硬膜外阻滞时,利多卡因宜用()
A.0.7~1.5%,1~2mg/kg
B.1~2%,4~5mg/kg
C.0.7~1.5%,8~10mg/kg
D.1.5~2%,5~7mg/kg
E.2%,10mg/kg
电动型主机遥控系统的转速限制回路中,在下列()情况下输入选小器输出不为零。
A.转速进入临界转速区
B.起动期间
C.正常停车
D.应急停车