内径千分尺的测量范围有5~30mm和()mm两种。
A.75~100
B.30~50
C.50~75
D.25~50
参考答案:D
客车在行驶中遇险时,要做到哪些?
A、优先保护乘客人身安全B、先抢救财产C、根据情况进行抢救D、先抢救贵重物品
—Is your mother at home now?
—________ I can’t hear you well.
A.Pardon?
B.Sorry, I can’t tell you.
C.Yes, she is.
D.No, she isn’t.