阿摩線上測驗
1. Why aren't insect tracheae associated with capillary beds?
(A) Insect capillaries are found only around the gut.
(B) Insects have external gills associated with hemolymph vessels.
(C) Insects use an air sac respiratory system.
(D) Insects have an open circulatory system.
(E) All of the above.
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統計： A(1), B(2), C(2), D(13), E(2) #3421106
統計： A(1), B(2), C(2), D(13), E(2) #3421106
