隔爆壳变形长度超过()mm,凹凸深度超过5mm为失爆。
A、20
B、30
C、40
D、50
参考答案:D
16. She became very popular after she won the Oscar ________ last year.
A.Prize
B.Award
C.Reward
D.Medal
分泌受血糖浓度调节的激素有()
A.肾上腺素
B.生长激素
C.胰岛素
D.胰高血糖素
E.甲状腺激素