Which of the following is true？
A. The vegetable vaccines are more effective than those produced in traditional ways.
B. The new technique is especially useful in developing countries.
C. This research team has already tested the technique in bananas.
D. Previously there existed no vaccine against hepatitisb.
癫狂久延，时作时止，有疲惫之象，形瘦，面红而秽，口干便难，舌尖红无苔，有剥裂，脉细数。证型为
A．In terms ofB．In spite ofC．Because ofD．Regardless of
A. In terms of
B. In spite of
C. Because of
D. Regardless of
列车长度应根据到发线的有效长度，并须预留()m的附加制动距离确定。
A. 10
B. 30
C. 50
D. 70
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