井道内表面与轿厢地坎、轿厢门框架或滑动门的最近门口边缘的水平距离不应大于（）m
A、0.1
B、0.15
C、0.2
D、0.3
参考答案：B
根据词意，用括号中所给词的适当形式真空。
小题1:I’m hungry now, I can eat two .(sandwich)
小题2:I just finished the e-mail to Mary? (write)
小题3:Mary is out, she should have a rest.(stress)
小题4:Do you think you are than your father? (outgoing)
小题5:Tom is planning the Great Wall next Sunday.(visit)
家人对家庭成员的关怀及关爱，属于（）
A.经济支持
B.维护支持
C.医疗支持
D.精神的支持
