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【判断题】
饭店开业二年后可申请评定星级,经相应星级评定机构评定后,星级标识使用有效期为三年。
A.
正确
B.
错误
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举一反三
【单选题】__________ sleep every night is important for teenagers. _________, loss of sleep can make you feel tired, and even cause you to put on weight.
A.
A good amount of; As a matter of fact
B.
A good number of; In truth
C.
A large amount of; As matter of fact
D.
Plenty of; In a fact
【简答题】A.It helps improve the physical health. B.It is good for a sound sleep. C.It helps develop mental toughness. D.It helps lose weight.
【简答题】Sleep helps make best use of _____ resources.
【多选题】在MySQL存储过程中参数分为三类,分别是( )
A.
in
B.
out
C.
both
D.
inout
【单选题】Sleep ,as we know, is important to us because it helps restore tired organs and tissues in our body. But how much sleep do we actually need? For most of us, eight hours seems to be about the right amo...
A.
Yet
B.
Hence
C.
Anyway
D.
Besides
【单选题】在一密闭容器中进行下列反应:2M(g)+N(g) R(s)+Z(g) 。在反应达到平衡后保持温度不变,若缩小容器的体积,则混合气体的平均相对分子质量 [     ]
A.
一定增大
B.
一定减小
C.
一定不变
D.
不能确定
【单选题】在一密闭容器中,进行下列反应,保持温度不变,分别以反应物化学计量数比投料,开始时总压为100kPa,其中达到平衡时总压仍为100kPa的反应是( )。
A.
X(g)+2Y(g) Z(g)
B.
X(g) Y(g)+Z(g)
C.
X(g)+Y(g) 2Z(g)
D.
X(g)+2Y(g) 2Z(g)
【单选题】在一密闭容器中,进行下列反应。保持温度不变,分别以反应物化学计量数比投料,开始时总压为 100kPa ,其中达到平衡时总压超过 100kPa 的反应是
A.
X(g)+2Y(g) = Z(g)
B.
X(g)+Y(g) = 3Z(g)
C.
X(g)+Y(g) = 2Z(g)
D.
X(g)+Y(g) = Z(g)+W(s)
【简答题】Sleep helps brain to______.
【简答题】Sleep is like food for the brain. Enough sleep helps the body and brain grow and develop. However, many Chinese do not sleep well, and many do not pay enough attention to sleep. The Chinese Medical Do...
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