在船舶上，消防泵、应急消防泵使用（）根水带时，压力符合要求.A.1 B.2 C.3

The flat rent is expensive, I’ve got about half the space I had at home but I am paying ________ here.

A．at twice much

B．as much twice

C．much as twice

D．twice as much

It is known to all that every minute ____ full use of____ the lessons will benefit students a great deal．

A．which makes; studying

B．when made; to study

C．that made; to study

D．which is made; studying

从所给的四个选项中，选择最合适的一个填入问号处，使之呈现一定的规律性（）

A.A

B.B

C.C

D.D

接口的弹簧寿命试验仪应满足下列要求：（）。

A.顶杆的振幅为（3±0.5）mm，频率为（1.2～2.0）Hz

B.弹簧寿命试验仪应带有自动计数器

C.弹簧寿命试验仪应能调节试样与顶杆的相对位置

（）坏证是指因误治而致病情发生变化，已无六经病证候可循的病证