助凝剂（coagulant aid）
助凝剂（coagulant aid）
相关考题：
Which of the following is NOT true according to the last paragraph?（ ）[A] America will conduct an international-wide aid.[B] The national-wide financial aid is proved helpful.[C] Obama doesn't think highly of American aid system.[D] Mr. Sumner's research is proved of great value.
单选题In China today, most university students are depend on their parents for financial aid.AtodayBare dependConDor financial aid
判断题助凝剂可起混凝作用。A对B错