轻型防爆胶轮采用（）启动。A、电马达 B、气马达 C、液压马达

身高只与遗传因素有关，与后天锻炼无关．______．

Where's my seat?[ ]

A. It's on the door.

B. It's near the door.

C. It's on my desk.

You should apologize  ____ your teacher ______ being late again.

A．to; for

B．for; to

C．/; for

D．to; to

活动夹层楼地板一般配以（）组成。

A.龙骨

B.密封条

C.橡胶垫

D.橡胶条

E.可供调节的金属支架

贷记卡每日累计透支取现不得超过（）元人民币。

A.1000

B.2000

C.3000

D.5000