[填空题] 大型养路机械作业中发生机械故障或其他有碍行车安全的问题,影响按时开通线路时,( )必须及时与车站值班员联系,报告具体情况,以便采取必要措施。

A--contract B--counter offer
C--customs duty D--date of delivery
E--declared value F--duty-free entry
G--fair H--export duty
I--installment J--multinational corporation
K--shipment L--showroom
M--trade gap N--trademark
O--transit

In about 45 years, temperatures on Earth will be hotter than at anytime during the past one million years, says the U.S.{{U}} (36) {{/U}}top climatologist in a new report{{U}} (37) {{/U}}today.
According to the report, published in the{{U}} (38) {{/U}}of the National Academy of Sciences, the planet is just two degrees shy of an{{U}} (39) {{/U}}temperature of 59 degrees Fahrenheit, which is what they{{U}} (40) {{/U}}the temperature was about a million years ago.
NASA’s James Hansen, along with{{U}} (41) {{/U}}from the University of California and Columbia University, are for the first time, marking a{{U}} (42) {{/U}}signaling the approach of temperatures that humans have never{{U}} (43) {{/U}}"Humans are now in control of the Earth’s climate, for better or worse," Hansen says.
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What that temperature change means is that by mid-century, the world will experience even more record heat