关于栓塞材料明胶海绵的描述,错误的是()
A.属基质海绵
B.能被组织吸收
C.用一般的血管造影导管即可快速注射
D.属短期栓塞材料
E.摩擦系数低
参考答案:D
My grandpa transplants some trees to his garden ________ it is the best time for them every year.
A.where
B.when
C.that
D.until
甲、乙、丙三个数的比是3:4:5,已知丙是9.5,甲、乙两数之和是______.