已知∠α=13°,则∠α的余角大小是 .
77°
题目分析:
解:∵∠α=13°,
∴∠α的余角=90º-13°=77°.
故答案为:77°.
Though we met only once at my uncle’s birthday party, he persuaded ______ all my savings.
A.to lend him
B.me to lend
C.me into lending him
D.me into lending
下列变异中,不可遗传的是
A.视觉正常的夫妇生下患色盲的儿子
B.经常在野外工作人员皮肤变黑
C.玉米地中常出现的白化苗
D.家兔毛色有白色、黑色、灰色