冷冻精液解冻后,活力在()以上方能使用。
参考答案:0.3
Oh,look!Here’s a photo________in my classroom at primary school.Can you recognise me in it?[ ]
A.taking
B.was taken
C.taken
D.being taken
偏转副翼使飞机左转弯时,为修正逆偏转的影响,应()
A.向左偏转方向舵
B.向右偏转方向舵
C.向右压杆