更多"Ethanol and methanol have important"的相关试题:
[单项选择]We have kept（）our friendship by writing to each other, so we are true friends.
A. back
B. up
C. off
D. down
[单项选择]It is currently about（）as methanol.
A. twice as expensive as
B. as twice expensive as
C. as expensive twice as
D. expensive as twice as
[单项选择]However, since methanol-fueled vehicles could be designed to be much more（）than gasoline clone vehicles fueled with methanol, they would need comparatively less fuel.
A. effective
B. efficient
C. sufficient
D. supplement
[单项选择]Methanol’s most attractive feature is that it can reduce（）about 90 percent the vehicle emissions.
A. of
B. in
C. on
D. by
[单项选择]Ethanol is commonly used as a gasoline supplement, but it is currently about（）methanol.
A. twice as expensive as
B. twice as more expensive as
C. as twice more expensive as
D. as twice expensive as
[单项选择]Ethanol is commonly used（）a gasoline supplement.
A. for
B. to
C. by
D. as
[单项选择]TXP中OT（除大屏幕OT）所使用的操作系统是（）？
A. UNIX
B. WINDOWS
C. MAC
D. LINUX
[单项选择]关于OT试验下列哪项正确（）
A. OT试验阳性可肯定有结核病
B. 凡是OT试验阴性可除外结核病
C. 卡介苗接种成功者OT试验呈强阳性
D. 粟粒性结核OT试验可呈阴性
E. 初次感染结核菌后2周OT试验呈阳性
[单项选择]Cargo that gives off fumes that may contaminate other cargo is known as a(n)（）.
A. delicate cargo
B. dirty cargo
C. toxic cargo
D. odorous cargo
[单项选择]关于OT试验下列哪项最准确（）
A. OT试验阳性可肯定有结核病
B. 凡是OT试验阴性可除外结核病
C. 卡介苗接种成功OT试验呈强阳性
D. 粟粒结核叮试验可呈阴性
E. 初次感染结核菌后2周，OT试验呈阳性
[单项选择]下面哪个不属于OT的功能（）？
A. 操作
B. 监控信息
C. 曲线分析
D. 逻辑组态
[单项选择]卡介苗接种后OT试验阳性的时间为（）
A. 1～周
B. 2～3周
C. 3～4周
D. 6～8周
E. 8～12周
