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【单选题】
下列有关说法不正确的是( )A.
互为同系物的有机物其组成元素相同，且结构必然相同；
B.
分子组成相差一个或若干个CH2原子团的化合物一定互为同系物；
C.
分子式为C3H8与C6H14的两种有机物一定互为同系物；
D.
互为同系物的有机物其相对分子质量数值一定相差14n(n为正整数)；
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举一反三
【单选题】A trial balance prepared before any adjustments have been recorded is:
A.
An adjusted trial balance.
B.
Used to prepare financial statements.
C.
An unadjusted trial balance.
D.
Correct with respect to proper balance sheet and income statement amounts.
E.
Only prepared once a year.
【单选题】In Trial 5, is it likely that bubbles were present in large numbers immediately before the can was shaken?
A.
Yes; based on the results of Experiment 1, the bubbles produced in Trial 4 probably lasted for less than 15 min.
B.
Yes; based on the results of Experiment 1, the bubbles produced in Trial 4 probably lasted for more than 2 hr.
C.
No; based on the results of Experiment 3, the bubbles produced in Trial 4 probably lasted for less than 2 hr.
D.
No; based on the results of Experiment 3, the bubbles produced in Trial 4 probably lasted for more than 3 hr.
【简答题】ACC的全称是（ ）。
【多选题】延缓果实后熟进程的主要相关基因有：A: PG基因B:ACC合成酶基因（ACS）C:ACC氧化酶基因（ACO）D:ACC脱氨酶基因
A.
PG 基因
B.
ACC 合成酶基因（ACS）
C.
ACC 氧化酶基因（ACO）
D.
ACC 脱氨酶基因
【单选题】At a criminal trial, the suspect is always presumed( ) before the conclusion of the trial.
A.
righteous
B.
decent
C.
not guilty
D.
innocent
【简答题】已知形体的两个视图,选择正确的第三视图。
【单选题】The family of the victim had to endure a long wait before the case came to trial. The underlined part means______.(2014-71)
A.
tolerate
B.
keep
C.
face
D.
hold
【简答题】我国的种子级别如何划分?
【单选题】Learn as much as you can about a clinical trial________.
A.
for some patients
B.
before participation
C.
in humans
D.
medical knowledge
E.
during the trial
F.
candidates for clinical trials
【多选题】以下关于预算定额说法正确的有( )。
A.
预算定额是按社会平均水平编制的。
B.
预算定额是施工企业编制施工预算的依据。
C.
预算定额由劳动定额、材料消耗定额和机械台班消耗定额组成。
D.
预算定额是编制概算定额的依据。
E.
预算定额反应资金的消耗量标准。
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