下述哪些描述是正确的()
A.并非所有脂溶性化合物都是麻醉剂
B.低温不能逆转麻醉
C.高压可逆转麻醉
D.温度增加可拮抗麻醉
E.低温可拮抗麻醉
参考答案:A, B, C
—________ that he managed to get the information?
—Oh, a friend of his helped him.[ ]
A. Where was it
B. What was it
C. How was it
D. Why was it
在当今数码系统中主流采集卡的采样频率一般为()
A、11.025kHz
B、92.05kHz
C、44.1kHz
D、33.075kHz