蓄电池液面高度应在防护板（）mm以上。
A.5-10
B.10-15
C.15-20
参考答案：B
选择与划线部分相同或相近的选项。
Don't worry. Your mother won't be mad at you.[ ]
A. angry with
B. sorry about
C. good to
D. worried about
什么是民兵的出入转队？有何规定？
