Optimized ultrasonic assisted extraction-dispersive liquid-liquid microextraction coupled with gas chromatography for determination of essential oil of Oli... Ultrasonic assisted extraction–dispersive liquid–liquid microextraction (UAE–DLLME) coupled with gas chromatography (GC) was applied for extraction and...
Conformational search was performed by Spartan 10 software using MMFF force filed, and conformers occurring within a 10 kcal/mol energy window from the global minimum were chosen for geometry optimization in the gas phase with the DFT method at the B3LYP/DGDZVP level. The B3LYP/DGDZVP ...
第41题 C 根据下文“In the gas station, behind the counter _49_ a big man with a smile.”可知答案。故选C。 第42题 A 根据下文“Back in the trunk, I pulled out the spare tyre”可知答案。故选A。 第43题 D 根据下文“dust-covered piec...
People eat different food in different areas. In China rice is the main food for people in the south while the people in the north eat noodles. People who live in European countries near the sea eat lots of fish. But in Cen...
"tog-editsectiononrightclick": "Þafian dǣla adihtunge þurh swīðran healfe mȳs swengas on dǣla titulum", "tog-watchcreations": "Ēacnian mīn behealdungtæl mid trametum þā ic scieppe and ymelum þā ic hlade on nett.", "tog-watchdefault":...
13. We get our bill for electricity ___, but the gas bill every two months. (month) 14. Traffic is ___ heavy during rush hours. (usual) 15. We’d better drive our cars ___ on rainy days. (slow) 16. China’s second manned(载人的)spaceship returned ___ to the Earth on Oct...
Rajaram also spends money on the vehicle insurance(车险) and the gas. Because of Rajaram, more and more students have come back to school. ()36. Why did many students in Baarali village drop out of school? A. Because their families were very poor. B. Because they didn’t like their...
The Carriage House is the nicest one with a large ADA accessible shower and huge Jacuzzi hot tub with a dual faced gas fireplace. This B&B is centrally located right near downtown Napa. Walking distance from restaurants and shops. This B&B is at t...
A. At a gas station. B. At a ban. C. At a hospital. 2. When does the man want the woman to tae her vacation? A. This month. B. Net month. C. The day after tomorrow. 3. Who too a job as Father Christmas? A. Dan. B. Peter. C. Judith. 4. Why did the man ...
• Before firing the burner, obtain permission from the person in charge of the boiler room to make sure that the boiler has been filled with wa- ter or diathermic oil, that the water circuit valves are open, and that the flue gas stacks have been suitably sized and freed from all ...