The most important factor affecting airway resistance is A: air velocity B: airflow C: respiratory tract length D: caliber of respiratory tract

In order not to irritate the gastrointestinal tract, ferrous sulphate should be given:

The most common cause of urinary tract obstruction in elderly men is<br/>urinary tract obstruction ( ) A: Benign prostatic hyperplasia B: Urethral tumor C: Bladder tumor D: Foreign body in bladder

Oral furantoin can be used for the treatment of ( ). A: Intestinal infection B: Urinary tract infection, quickly eliminated from the body C: Urinary tract infection, slow elimination from the body D: Respiratory infection

Flatulence and eructation represent ________. A: regurgitation of chyme B: distention of the esophagus C: passage of gas or air from the GI tract D: muscular movement of the alimentary tract E: sounds heard only by abdominal auscultation

Which of the following would not be acted upon by pancreatic juice secreted into the intestinal tract:</p></p>

Escherichia coli , when found in conjunction with urethritis , often indicate infection higher in the uro-genital tract .

Scabies is transmitted through（ ） A: Respiratory tract B: Oral ingestion C: Placenta D: Contact

The internal capsule A: is a cavity of telencephalon B: the corticospinal tract passes through the anterior limb C: lies between the thalamus, caudate nucleus and the lentiform nucleus D: the optic radiation passes the anterior limb E: the corticonuclear tract passes through posterior limb

A businessman should have a mind of wild range. A: scope B: tract C: district D: aspect