与G蛋白活化密切相关的是
ATP
B. CTP
C. GTP
D. UTP
E. TTP
下列可直接激活蛋白激酶C的分子是
A. IP3
B. PIP2
C. DAG
D. cAMP
E. cGMP
lesson 23 短听力选择 1-1
A. fire men and fire truck
B. passenger steps and coaches
C. doctors and first-aid
D. maintenance personnel
Lesson 23 短听力选择-2
A. controlling problem
B. engine problem
C. wake turbulence
D. radar failure