99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

<ins id="txpzv"></ins>

<dl id="txpzv"></dl><dl id="txpzv"><acronym id="txpzv"></acronym></dl>

<sup id="txpzv"><legend id="txpzv"><s id="txpzv"></s></legend></sup>

<pre id="txpzv"><strong id="txpzv"></strong></pre>

<pre id="txpzv"><strong id="txpzv"></strong></pre>

單項(xiàng)選擇題

When we stow nylon rope, we can （）.

A. stow it in strong sunlight
B. cover it with tarpaulins
C. keep it on a reel
D. keep it by itself

你可能感興趣的試題

單項(xiàng)選擇題

Ropes should be kept （）.

A. in wet places
B. close to the heat
C. away from chemicals
D. in dry places

單項(xiàng)選擇題

It is more economical to use （）, because of their greater strength and longer useful lives.正確答案A

A. nylon ropes
B. manila ropes
C. sisal ropes
D. wooden ropes

<pre id="ftk5r"><strong id="ftk5r"></strong></pre>

<em id="ftk5r"><li id="ftk5r"></li></em>