美国发电的能源是3种，主要是天然气，煤和原子能，但只有天然气的价钱变化大，所以美国用电的价钱是主要是由天然气价钱决定。如果飓风来到Gulf of
Mexico,天然气价钱必然上涨。NRG主要靠煤发电，当天然气价钱上涨时，这股价会跟着上涨，在某种意义上，这股也是飓风股，但这关系不是很显然。另
一种飓风股是天然气股，以CHK为代表。不幸的是，美国最近通过的Liquified Natural
Gas法，将决定天然气价钱不会涨很快（Liquified Natural
Gas将使得进口天然气变得容易，国外开采的天然气成本低），否则的话，CHK长期也是好股。当然天然气上涨也会导致煤价上涨（买不到天然气，发电站只好
用煤）。
https://killer.sh Pre Setup Once you've gained access to your terminal it might be wise to spend ~1 minute to setup your environment. You could set these: alias k = kubectl # will already be pre-configured export do = "--dry-run=client -o yaml" # k get pod x $do export now = "--force --grace-period 0" # k delete pod x $now Vim To make vim use 2 spaces for a tab edit ~/.vimrc to contain: set tabstop=2 set expandtab set shiftwidth=2 More setup suggestions are in the tips section . Question 1 | Contexts Task weight: 1% You have access to multiple clusters from your main terminal through kubectl contexts. Write all those context names into /opt/course/1/contexts . Next write a command to display the current context into /opt/course/1/context_default_kubectl.sh , the command should use kubectl . Finally write a second command doing the same thing into ...
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