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You can perform. all those functions that you perform. at present with your mobile devices but of much higher speed than【M1】______ before. It provides you with faster connection, faster Internet【M2】______ access, and music entertainment with improved quality. The benefits are of immense. You can avail the benefits of video【M3】______ calling. You can call your friend and have a video call facility. The clarity is better and the facility can be enjoyed as long as both of you are using the 3G technology. With 3G technology it is impossible to access any site on the【M4】______ Internet by using your phone as a modem for your computer or laptop and mail the important documents. Download games and【M5】______ songs is much faster with this technology. You can download your favorite games into your mobile and start playing. You can also download the music videos or simply the songs. The technology enable for much faster download. Because it will take only few【M6】______ minutes to download movie clips or albums. You can use your favorite search engines to find the【M7】______ information on news headlines, get information about the evening weather so that you can plan your party. You can find out the latest baseball score and any latest news about your favorite sport. The 3G phones with its advanced feature will also enable you to watch【M8】______ excited highlights of your favorite sport. With the increased speed【M9】______ and improved quality of the services provided in the 3G phones, you can view the multimedia data applications as movie clips and【M10】______ the music videos with clearer picture than with the 2.5G technology mobiles. 【M1】
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皮皮学刷刷变学霸
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【单选题】(2015· 全国卷 I , 11) 微生物电池是指在微生物的作用下将化学能转化为电能的装置,其工作原理如图所示。下列有关微生物电池的说法错误的是 ( ) 。
A.
.正极反应中有 CO 2 生成
B.
.微生物促进了反应中电子的转移
C.
.质子通过交换膜从负极区移向正极区
D.
.电池总反应为 C 6 H 12 O 6 + 6O 2 == =6CO 2 + 6H 2 O
【判断题】化学电池是利用物质的化学反应发电,如微生物电池、酶电池、生物太阳电池等。( )
A.
正确
B.
错误
【单选题】下列溶液浓度均为 0.1mol·L -1 ,其中 pH 值最大的是( )。
A.
(NH 4 ) 2 SO 4
B.
NaCl
C.
Ca(ClO) 2
D.
NH 4 Cl
【单选题】下列各溶液浓度均为 0.1 mol·L -1 , 若用 0.1000 mol·L -1 NaOH 滴定,不能直接滴定的酸是( )
A.
甲酸( K a =1.77×10 -4 )
B.
氢氰酸( K a =4.93×10 -10 )
C.
酒石酸( K a =1.04×10 -3 )
D.
草酸( K a =5.90×10 -2 )
【单选题】下列溶液浓度均为 0.1mol · L -1 ,其中 pH 值最小的是
A.
KNO 3
B.
KCN
C.
AlCl 3
D.
NaAc
【单选题】25 o C时,取浓度均为0.1 mol·L -1 的醋酸溶液和氨水溶液各20 mL,分别用0.1 mol·L -1 NaOH溶液、0.1 mol·L -1 盐酸进行中和滴定,滴定过程中pH随滴加溶液的体积变化关系如图所示。下列说法正确的是
A.
曲线I中滴加溶液到10 mL时:c(CH 3 COO - )>c(Na + )>c(H + )>c(OH - )
B.
曲线I中滴加溶液到25 mL时:c(NH 4 + )>c(C1 - )>c(H + )>c(OH - )
C.
曲线II中滴加溶液在10 mL~25 mL之间存在:c(NH 4 + )=c(Cl - )>c(OH - )=c(H + )
D.
曲线II中滴加溶液到10mL时:c(CH 3 COO - )-c(CH 3 COOH)=2[c(H + )-c(OH - )]
【单选题】微生物电池是指在微生物的作用下将化学能转化为电能的装置,其工 作原理如图所示。下列有关微生物电池的说法错误是
A.
正极反应中有 CO 2 生成
B.
微生物促进了反应中电子的转移
C.
质子通过交换膜从负极区移向正极区
D.
电池总反应为 C 6 H 12 O 6 +6O 2 =6CO 2 +6H 2 O
【判断题】“庄公寤生,惊姜氏。”这句话的意思是说庄公是在他母亲睡着的时候出生的,所以把他母亲吓了一跳。
A.
正确
B.
错误
【单选题】下列电池中属于生物电池的是( )。
A.
锂蓄电池
B.
超级电容
C.
酶电池
D.
镍氢电池
【单选题】微生物电池是指在微生物的作用下将化学能转化为电能的装置,其工作原理如图所示。下列有关微生物电池的说法错误的是
A.
正极反应中有 CO 2 生成
B.
微生物促进了反应中电子的转移
C.
质子通过交换膜从负极区移向正极区
D.
电池总反应为 C 6 H 12 O 6 + 6O 2 == =6CO 2 + 6H 2 O
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