I（）reading novels（）watching movies. I like

水泵房由水泵管理员每（）ｈ巡视一次。

A.0.5

B.1

C.2

D.3

辣椒白粉病的适宜发病湿度是（）。

A.40～50%

B.50～75%

C.80～90%

D.90%以上

熔铅接口的要求有（）。

A.加热约600℃

B.严禁与水接触以防止爆炸

C.灌铅速度不宜过快，以免造成喷铅事故

D.可用胶圈来代替麻丝

The standardization of futures contracts promotes liquidity because:()

A. all the participants in the market know exactly what is being offered for sale, and they know the terms of the transactions. 

B. it guarantees that all of the traders in the futures market will honor their obligations and that futures contracts trade in a smoothly functioning market. 

C. it provides a safeguard whereby traders are required to realize any losses in cash on the day they occur.

单位时间内从气井产出的气态或液态物质的数量称为（）。

A、流量

B、绝对无阻流量

C、无阻流量

D、气水比