游标卡尺由哪几部分组成？
参考答案：
由刀口形的内、外量爪和深度尺组成。
I can make you _____ what I say, but you can’t make yourself ___________ in English.
A．understand; understand
B．understand; understood
C．to understand; understand
D．understand; to be understood
测SAN胶乳的固含量高，那么对熔融指数有何影响？
