发挥药物疗效最快的给药途径是()。A．皮内注射 B．皮下注射 C．肌内注射 D．静脉

关于经线的叙述，正确的是[ ]

A．两条正相对的经线可组成一个经线圈  

B．全球可划出360条经线  

C．经线都指示南北方向  

D．所有经线都相互平行，永不相交

证据力

飞机失事主要是由飞机质量因素造成的。（）

A、对

B、错

楼层接到VIP接待通知后，应怎么办？

A parent reports that his 2-year-old child often fails when running. The nurse interprets this as indicating which of the following as a normal aspect of a toddler's vision

A．Near-sightedness.

B．Far-sightedness.

C．Binocular vision.

D．Strabismus.