皮皮学,免费搜题
登录
搜题
【判断题】
连续在第25,26,27次奥运会上获得跳水冠军的选手是 判断对错
A.
正确
B.
错误
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【单选题】热导检测器具有的特点是()。
A.
灵敏度很高
B.
依据样品与载气具有不同的导热系数来检测
C.
属于选择性的检测器
D.
结构复杂
【单选题】David has a sore tooth. We can also say David has a _____. [     ]
A.
stomachache
B.
toothache
C.
backache
D.
headache
【单选题】热导检测器具有的特点( )
A.
灵敏度越高
B.
依据样品与被分离的组分的热导系数检测
C.
属于选择性检测器
D.
结构复杂
【多选题】从事电气设备红外热像检测的人员必须具备以下()条件。
A.
了解红外热成像诊断技术的基本条件和诊断程序;熟悉红外热成像仪的工作原理,技术参数和性能,熟悉掌握仪器的操作程序和调试方法
B.
接受有关红外热像检测技术的培训,并合格上岗
C.
了解被检测设备的结构、特点、外部接线、运行状况和导致设备故障基本因素
D.
具有一定现场工作经验,熟悉并能严格遵守电力生产和工作现场的有关安全规程
【简答题】A.They can't get through to David. B.David has been busy recently. C.They are going to invite David to see a film. D.They want to see the film without David.
【单选题】热导检测器具有的特点是()
A.
灵敏度很高
B.
依据样品与载气具有不同的导热系数来检测
C.
属于选择性的检测器
D.
结构复杂
E.
检测过程中要破坏样品
【单选题】听力原文:M: Has David found an apartment? W: David wanted to find an apartment for 300 dollars a month, but discovered he had to pay twice that much. Q: How much did David pay for his apartment? (3)
A.
$400.
B.
$300.
C.
$500.
D.
$600.
【简答题】请简要阐述影响促销时机的因素有哪些?
【单选题】David has few questions to ask,_____?
A.
hasn’t he
B.
does he
C.
doesn’t he
D.
has David
【单选题】— Isn’t David an efficient manager? —Er, David is really great but sometimes he has problems ______his ideas.
A.
getting across
B.
getting along
C.
getting around
D.
getting off
相关题目: