脊麻后头痛最常见于脊麻后()
A.12小时以内发生
B.12~36小时内发生
C.36~60小时内发生
D.60~82小时内发生
E.82小时后发生
参考答案:A
LBJ控制盒音频输出功率为()可调。
A、0.5-5w
B、1-5w
C、2-6w
D、5-10w
----Excuse me, sir. Could you tell me________ ?
----Sorry, I don’t know.
A.where does he live
B.when will the film start
C.where is that new classmate from
D.who does the cleaning on Monday