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【判断题】
在数据通信中，按照信息的传送方向，通信方式可分为、半、全三种。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】It is wise to put milk on a shelf close to the bottom because it is especially _______ to temperature changes
A.
flexible
B.
fundamental
C.
sensitive
D.
positive
【单选题】In order to find the missing child, the villagers___________ all they can in the past five hours.
A.
have been doing
B.
did
C.
do
D.
had done
【单选题】Color changes in chameleons (变色龙) seem to be caused by environmental temperature as well as by other external stimuli.
A.
have to
B.
appear to
C.
ought to
D.
used to
【单选题】______ You might expect the highest incidence of a heat stroke when the maximum temperature is 100 and humidity is 50%.
A.
T
B.
F
C.
NG
【单选题】组织要得到一支优秀的员工队伍,最突出的问题是( )。
A.
解决队伍结构中人员梯队问题
B.
解决员工思想教育问题
C.
解决员工教育投入问题
D.
解决组织文化培养问题
【单选题】An isotherm is ______.
A.
a line on a weather map connecting equal points of both temperature and pressure
B.
an instrument that measures the climatological effects of temperature
C.
a line connecting points of equal barometric pressure on a weather map
D.
a line connecting points of equal temperature on a weather map
【单选题】下列关于化学键的说法正确的是： ①HF是一种非常稳定的化合物，这是因为分子间存在氢键 ②NaCl熔化离子键发生了破坏 ③CO 2 、SiO 2 熔点后者高是因为前者克服分子间作用力后者熔化破坏共价键 ④活泼金属与非金属化合时，一定能形成离子键 ⑤离子化合物中可能同时含有离子键和共价键 ⑥由非金属元素形成的化合物一定不是离子化合物 ⑦单质分子中一定含非极性键
A.
①②⑤
B.
④⑥⑦
C.
①③④
D.
②③⑤
【单选题】Among the rings of a piston the ______one is subjected to the greatest load and temperature.
A.
bottom
B.
middle
C.
top
D.
any position
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