【简答题】父亲是红绿色盲患者,母亲表现型正常,生下一个女儿是红绿色盲,一个男孩是甲型血友病,①他们所生的女孩中,色盲的概率是多少?正常的概率是多少?血友病的概率是多少?②他们所生的男孩中,色盲的概率是多少?血友病的概率是多少?正常的概率是多少?(用Xb表示色盲基因,Xb表示血友病基因)
【判断题】输入继电器线圈的通断受其前面的触点的通断条件控制。此说法
【判断题】使用菜墩时,应在菜墩的整个平面均匀使用。
【单选题】What is NAND GATE?( )
A.
As long as one of the inputs is high, the output is high; Only when all inputs are low, the output is low.
B.
When all inputs are high, the output is high, otherwise the output is low.
C.
NAND gate is a combination of AND gate and NOT gate.
【单选题】What gate does the flight to London leave from?
【判断题】输入继电器线圈的通断受其前面的触点的通断条件控制。
【简答题】What does the woman suggest they dobefore going to the Golden Gate Bridge?A. Getting to the top of a high hill. B. Resting for a short moment. C. Enjoying sunshine on the beach. D. Viewing the bridge ...
【单选题】What does the prince want the guard to do at the palace (宫殿) gate?
C.
Help the boy stand up.
【判断题】输入继电器线圈的通断受其前面的触点的通断条件控制。