下述哪项是反转恢复脉冲序列中,施加的第一个脉冲()
A.180°
B.270°
C.50°
D.25°
E.90°
参考答案:A
33.—I’m sure the Mexican Government will control the outbreak of the H1N1 flu in a very short time. Do you think so?
—Yes. _______ .
A.Great minds think alike
B.The early bird catches the worm
C.Facts speak louder than words
D.No pains, no gains
下列有关眼震的论述中,错误的是
A.眼震的全称为眼球震颤
B.眼震是眼球的一种不随意的节律性运动
C.前庭性眼震由交替出现的慢相和快相运动组成
D.前庭系统的周围性病变及中枢性病变均可引起眼震
E.通常将慢相所指的方向作为眼震方向