国际单位中,体积单位是(),密度单位是(),力的单位是(),质量的单位是()。
参考答案:m3;Kg/m3;N;Kg
37. With the guide _______ the way, we finally got to the village which we were looking for.
A.led
B.leading
C.to lead
D.had led
CCK刺激胰液分泌的特点是
A.水分少,HCO3ˉ和酶含量多
B.水分和HCO3ˉ含量少,酶含量多
C.水分和HCO3ˉ含量多,酶含量少
D.水分多,HCO3ˉ和酶含量少