在这种环境中安全起步怎样使用灯光?() A.开启远光灯 B.只能开启左转向灯 C.开

题型:单项选择题

问题:

在这种环境中安全起步怎样使用灯光?()

A.开启远光灯

B.只能开启左转向灯

C.开启左转向灯、近光灯

D.开启危险报警闪光灯

考点:机动车驾驶人考试安全文明驾驶常识考试(科目三科目四)小车
题型:单项选择题

阅读理解。

     The earth moves round the sun, and the moon moves round the earth. When our part (部分) of the earth

turns to the sun, it is day. When our part of the earth turns away from the sun, it is night. The sun is much

bigger than the moon. But sometimes the moon looks bigger than the sun, because it's much nearer to the earth. The sun is very bright. It gives a very strong light. The moon looks quite bright, too. But it doesn't give any

light at all. The moon looks much bigger and brighter than the stars. But in fact the stars are much bigger and

brighter than the moon. They look smaller than the moon because they're much farther away from us.

1._______ moves round ________.

 A. The earth; the moon

B. The moon; the earth

C. The moon; the stars

D. The sun; the earth

2. Sometimes the moon looks bigger than the sun, because _______.

A. it is much bigger than the sun

B. doesn't give a very strong light

C. it is much nearer to the earth than the sun

D. it comes out only at night

3. The sun _______.

A. is very bright, and it gives a very strong light

B. isn't bright, but it gives a very strong light

C. is very big, but it doesn't give any light at all

D. is very round, but it can't move round

4. The stars and _______.

A. look much bigger than the sun

B. look much brighter than the moon

C. are a lot brighter than the moon, but they are not bigger than the moon

D. are much farther away from us than the moon

5. When it is day, _______.

A. our part of the earth turns to the moon

B. the sun looks much smaller than the stars

C. we can't see any stars in the sky

D. the moon turns away from the sun

题型:单项选择题

视网膜神经节细胞的同心圆式感受野形成的生理学机制是().

A.侧抑制

B.前抑制

C.正反馈

D.负反馈

题型:单项选择题

药源性疾病是指

A.用于预防、诊断、治疗疾病过程中,因药物本身的作用,药物相互作用以及药物的使用引起机体组织或器官发生功能性或器质性损害而出现各种临床的异常症状

B.用于预防、诊断、治疗疾病过程中,因药物的使用引起机体组织损害而出现异常症状

C.用于预防、诊断、治疗疾病过程中,因药物相互作用引起机体器官发生功能损害而出现的异常症状

D.用于预防、诊断、治疗疾病过程中,因药物本身的作用引起机体器质性损害而出现各种临床异常症状

E.用于预防、诊断、治疗疾病过程中,因药物本身的作用引起机体组织损害而出现各种临床异常症状

题型:单项选择题

在地下2900千米处,纵波的传播速度突然下降,横波完全消失,可推测地球内部圈层中为液体的是()

A.软流层

B.上地幔

C.下地幔

D.外核

题型:单项选择题

常用的脱水药为()

A.呋塞米

B.氢氯噻嗪

C.高渗葡萄糖

D.甘露醇

E.螺内酯

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