[单选] It is NOT advisable to use nylon for alongside towing because it（）.

A . stretches too much
B . is too difficult to make fast
C . parts too readily
D . is too susceptible to mildew

It was demanded that the injured crewmembers（）at once. was treated。 would be treated。 being treated。 be treated。气相色谱仪的基本结构是什么？飞机牵引车在推出或拖曳航空器行驶过程中，人员不可上、下飞机牵引车。行政强制分为行政强制措施和行政强制执行。施工中井盖开启时，应在井盖旁设置醒目的反光锥形标志物。 It is NOT advisable to use nylon for alongside towing because it（）.

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