静平衡既能平衡不平衡量产生的离心力，又能平衡由其组成的力矩。
参考答案：错
It's not highly recommended that a dictionary be at hand when English learners _____ some new words. [ ]
A. come out
B. come about
C. come along
D. come across
装有馅料的制品成熟后，有时出现馅料（），体积变小的现象。
A、膨胀
B、收缩
C、松软
D、结块
