【单选题】What does Shell plan to do?
A.
Shell plans to cooperate with PetroChina in Nanhai Petroleum Chemical project.
B.
Shell plans to cooperate with PetroChina in the north-east gas transmission project.
C.
Shell plans to cooperate with China National Offshore Oil in Nanhai Petroleum Chemical project.
D.
Shell plans to cooperate with PetroChina in the west-east gas transmission project.
【单选题】What is the “petroleum”mean?
【简答题】下列滴定中各选用何种指示剂? (1)0.01 mol.dm-3HCl滴定0.01 mol.dm-3NaOH。 (2)0.1 mol.dm-3HCl滴定0.1 mol.dm-3。NH3。 (3)0.1 mol.dm-3HCl滴定0.1 mol.dm-3Na2B4O7。 (4)0.1 mol.dm-3HCl滴定0.1 mol.dm-3Na2CO3。
【单选题】下列水溶液沸点最低的是( )。
D.
0.01mol·dm -3 C 6 H 12 O 6
【简答题】(6分)(1)质量数为23,中子数为12的原子的原子结构示意图: &s.5*u.c.#om (2)下列物质属于离子晶体 ,属于分子晶体的是 , 原子晶体 ,金属晶体 。 ①铁 ②干冰 ③金刚石 ④铜 ⑤水晶 ⑥氯化钠 ⑦碘 ⑧氢氧化钠
【简答题】看图写句子。 1. A: What are they doing? B: They're ____________. 2. A: What ___________? B: They're _____________. 3. A:______________________? B:_______________________. 4. A:_______________________? B:___...
【简答题】看图写句子。 A: What's it doing? B: It's __________. A: What are ____________? B: They're _________________. A: What are ___________? B: They're _____________. A: What _____________? B: They're __________.