All of the following are part of the first line of defense against invaders except
A: tears
B: saliva
C: neutrophils
D: skin
A: tears
B: saliva
C: neutrophils
D: skin
举一反三
- 中国大学MOOC: Generally speaking, the first part of your resume should include all the following information except _____.
- According to the text, the following things are important for the very first part of the interview EXCEPT _____.
- Generally speaking, the first part of your resume should include all the following information except _____. A: name and address B: telephone number C: email address D: marital status
- Which of the following are the three lines of defense against human infection A: Complete skin and mucous membrane B: Bactericidal substances and phagocytes in body fluids C: Antibodies and lymphocytes D: Antibiotics E: Vaccines
- The invertebrate's first line of defense is A: skin. B: mucus membranes. C: exoskeleton. D: secretions.