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如下图装置所示，是用氢氧燃料电池B进行的某电解实验： （1）若电池B使用了亚氨基锂（Li 2 NH）固体作为储氢材料，其储氢原理是： Li 2 NH＋H 2 ＝LiNH 2 ＋LiH ，则下列说法中正确的是 。 A．Li 2 NH中N的化合价是－1 B．该反应中H 2 既是氧化剂又是还原剂 C．Li ＋ 和H ＋ 的离子半径相等 D．此法储氢和钢瓶储氢的原理相同 （2）在电池B工作时： ① 若用固体Ca(HSO 4 ) 2 为电解质传递H ＋ ，则电子由 极流出，H ＋ 向 极移动。(填“a”或“b ”) ② b极上的电极反应式为： ③ 外电路中，每转移0.1 mol电子，在a极消耗 L的H 2 （标准状况下）。 （3）若A中X、Y都是惰性电极，电解液W是滴有酚酞的饱和NaCl溶液，则B工作时： ① 电解池中X极上的电极反应式是 。在X极这边观察到的现象是 。 ② 检验Y电极上反应产物的方法是 。 ③ 若A中其它均不改变，只将电极Y换成铁棒，可实现的实验目的是 。
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【简答题】When a call ,what are the ways to sound as good as you really are ?
【单选题】When making a call, sometimes there will be something wrong with the phone or telephone line. Which of the following expressions is not right when expressing the problems?
A.
The phone is in order.
B.
She has changed her telephone number.
C.
I’ve tried to get through several times but it's always engaged.
D.
Sorry, we were cut off.
【单选题】你是一台 Windows Server 2012 R2计算机的系统管理员,在计算机管理控制台下你看到这台计算机上有几个管理型共享,在这些管理型共享中( )代表系统目录。
A.
ADMIN$
B.
Drive letter$
C.
IPC$
D.
SYSVOL$
【简答题】试校核图示连接销钉的剪切强度。已知F=100KN,销钉直径d=30mm,材料的许用剪切力[τ]=60Mpa,若强度不够,应改用至少多大直径的销钉?
【单选题】When making a call, sometimes there will be something wrong with the phone or telephone line. At this moment, you can NOT say:
A.
I've tried to get through several times but it's always engaged.
B.
Sorry, we were cut off.
C.
The phone is out of order.
D.
Would you like to leave a message?
【单选题】When making a call, sometimes there will be something wrong with the phone or telephone line. Which of the following expressions is not right when expressing the problems?
A.
I've tried to get through several times but it's always engaged.
B.
Sorry, we were cut off.
C.
The phone is in order.
D.
She has changed her telephone number.
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