【简答题】There was something ____(奇怪的)in the way he smiled.
【简答题】某车间有A、B、C三台发电机,今要求(1)A必须开机(2)其他两台电动机中至少有一台开机,如不满足上述要求,则指示灯熄灭。试用与非门完成此电路。
【单选题】There was something _______in the way he smiled.
【单选题】关于细胞因子描述错误的是
A.
细胞因子是由免疫细胞和某些非免疫细胞经某种刺激分泌的小分子多肽或蛋白质
B.
细胞因子是与免疫球蛋白和补体相似的又一类免疫分子
D.
细胞因子具有调节免疫、抗炎、抗病毒、抗肿瘤、调节细胞增殖和分化等作用
【单选题】A sparkle in his eyes ____ his face whenever he smiled.
【单选题】When he knew that he had passed the driving test, he smiled _______.
【简答题】He smiled in ________________. Obviously he was very pleased with what he had done. (satisfy)