同一种土体在不同击实功的条件下，其最大干密度不变。
参考答案：错
Lily didn’t come to the party last Sunday. ____，she would have made the party more exciting .
A．If she came
B．Would she come
C．Had she come
D．Did she come
用组织制作分离病毒的标本时，通常将组织制成（）。
A.10%的悬液保存
B.5%的悬液保存
C.10%的悬液保存
D.20%的悬液保存
E.50%的悬液保存
