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【多选题】
以下选项中,中文版式方式包括以下几种A.
带圈字符
B.
合一
C.
拼音指南
D.
纵横混排
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举一反三
【单选题】Mr. Cog has 18 hours per day to divide between labor and leisure. His utility function is U(C,R) = CR; where C is dollars per year spent on consumption and R is hours of leisure. If he has 19 dollars ...
A.
15R+ C = 19.
B.
15R + C = 289.
C.
R + C/15 = 379.
D.
C = 289 + 15R.
【简答题】衰老茶树地上部用( )进行改造。(两种,中间用“、”隔开)
【单选题】【图片】This is a schematic for the iodine hydrogenation. When the reaction proceeds as it is written, what conditions prevail:
A.
Q < K eq ; Δ r G> 0
B.
Q < K eq ; Δ r G < 0
C.
Q > K eq ; Δ r G > 0
D.
Q > K eq ; Δ r G < 0
【单选题】Judging from what he has written, we can know that the writer is ______.
A.
an experienced reporter
B.
a medical researcher
C.
an alcohol producer
D.
a social worker
【单选题】有钢铝两根圆截面轴,其尺寸大小都相同。已知 G钢=3G铝,当受扭情况相同时,( )
A.
钢轴的最大剪应力和扭转角都小于铝轴的
B.
钢轴的最大剪应力和扭转角都等于铝轴的
C.
两轴的最大剪应力相等，而钢轴的扭转角大于铝轴的
D.
两轴的最大剪应力相等，而钢轴的扭转角小于铝轴的
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