股动脉穿刺麻醉时错误的作法是()。
A.不要重压股动脉
B.麻醉药物为1%利多卡因
C.仅行皮下麻醉
D.药物要注入股动脉鞘内
E.麻药要适量
参考答案:C
已知抛物线y2=2px(p>0)的准线与圆x2+y2-6x-7=0相切,则p的值为( )。
—Can you tell me _______ I should wear for the party tonight?
—A blue dress, I think. It’s suitable for a party.
A.that
B.what
C.whether
D.how